NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities

Access premium articles, webinars, resources to make the best decisions for career, course, exams, scholarships, study abroad and much more with

Plan, Prepare & Make the Best Career Choices

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities

Edited By Ramraj Saini | Updated on Oct 09, 2023 05:20 PM IST

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities

Algebraic Expressions and Identities Class 8 Questions And Answers provided here. These NCERT Solutions are prepared by experts team at Careers360 team considering the latest syllabus and pattern of CBSE 2023-24. This chapter will introduce you to the application of algebraic terms and variables to solve various problems. Algebra is the most important branch of mathematics which teaches how to form equations and solving them using different kinds of techniques. Important topics like the product of the equation, finding the coefficient of the variable in the equation, subtraction of the equation and creating quadratic equation by the product of its two roots, and division of the equation are covered in this chapter. Also Practice NCERT solutions for class 8 maths to command the concepts.

Algebraic Expressions and Identities Class 8 Solutions - Important Formulae

• (a + b)2 = a2 + 2ab + b2

• (a - b)2 = a2 - 2ab + b2

• (a + b)(a - b) = a2 - b2

• (x + a)(x + b) = x2 + (a + b)x + ab

• (x + a)(x - b) = x2 + (a - b)x - ab

• (x - a)(x + b) = x2 + (b - a)x - ab

• (x - a)(x - b) = x2 - (a + b)x + ab

• (a + b)3 = a3 + b3 + 3ab(a + b)

• (a - b)3 = a3 - b3 - 3ab(a - b)

Free download NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities for CBSE Exam.

Algebraic Expressions and Identities Class 8 NCERT Solutions (Intext Questions and Exercise)

NCERT Solutions to Exercises of Chapter 9: Algebraic Expressions and Identities

what are expressions?

Five examples of expressions containing one variable are:

$x^{^{4}}, y, 3z, p^{^{2}}, -2q^{3}$

Five examples of expressions containing two variables are:

$x + y, 3p-4q,ab,uv^{2},-z^{2}+x^{3}$

Question:

$x$

x on the number line:

Question:

$x-4$

x-4 on the number line:

Question:

2x+1

2x+1 on the number line:

Question:

$3x-2$

3x - 2 on the number line

Algebraic expressions and identities class 8 solutions - Topic 9.2 Terms, Factors and Coefficients

$x^2y^2-10x^2y+5xy^2-20$

coefficient of each term are given below

$\\The\ coefficient\ of\ x^{2}y^{2}\ is \1\\ \\The\ coefficient\ of\ x^{2}y\ is \ -10\\ \\The\ coefficient\ of\ xy^{2}\ is \5\\$

Algebraic expressions and identities class 8 ncert solutions - Topic 9.3 Monomials, Binomials and Polynomials

$-z+5$

Binomial since there are two terms with non zero coefficients.

$x+y+z$

Trinomial since there are three terms with non zero coefficients.

$y+z+100$

Trinomial since there are three terms with non zero coefficients.

$ab-ac$

Binomial since there are two terms with non zero coefficients.

$17$

Monomial since there is only one term.

Question: 2(a) Construct 3 binomials with only $x$ as a variable;

Three binomials with the only x as a variable are:

$\\ \\x+2,\ x +x^{2},\ 3x^{3}-5x^{4}$

Question: 2(b) Construct 3 binomials with $x$ and $y$ as variables;

Three binomials with x and y as variables are:

$\\ \\x+y,\ x-7y, xy^{2} + 2xy$

Question: 2(c) Construct 3 monomials with $x$ and $y$ as variables;

Three monomials with x and y as variables are

$\\ xy,\ 3xy^{4},\ -2x^{3}y^{2}$

Question: 2(d) Construct 2 polynomials with 4 or more terms .

Two polynomials with 4 or more terms are:

$a+b+c+d, x-3xy+2y+4xy^{2}$

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities Topic 9.4 Like and Unlike Terms

Question:(i)

$7xy$

$\\Two\ terms\ like\ 7xy\ are:\\ -3xy\ and\ 5xy$

Question:(ii)

$4mn^2$

$\\Two\ terms\ which\ are\ like\ 4mn^{2}\ are:\\ mn^{2}\ and -3mn^{2.}$

we can write more like terms

Question:(iii)

$2l$

$\\Two\ terms\ which\ are\ like\ 2l\ are:\\ l\ and\ -3l$

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities - Exercise: 9.1

$5xyz^2-3zy$

following are the terms and coefficient

The terms are $5xyz^{2}\ and\ -3zy$ and the coefficients are 5 and -3.

$1+x+x^2$

the following is the solution

$\\The\ terms\ are\ 1,\ x,\ and\ x^{2}\ and\ the\ coefficients\ are\ 1,\ 1,\ and\ 1\ respectively.$

$4x^2y^2-4x^2y^2z^2+z^2$

$\\The\ terms\ are\ 4x^{2}y^{2},\ -4x^{2}y^{2}z^{2}and\ z^{2}\ and\ the\ coefficients\ are\ 4,\ -4\ and\ 1\ respectively.$

$3-pq+qr-rp$

The terms are 3, -pq, qr,and -rp and the coefficients are 3, -1, 1 and -1 respectively.

$\frac{x}{2}+\frac{y}{2}-xy$

$\\The\ terms\ are\ \frac{x}{2},\ \frac{y}{2}\ and\ -xy\ and\ the\ coefficients\ are\ \frac{1}{2},\ \frac{1}{2}\ and\ -1\ respectively.$

Above are the terms and coefficients

$0.3a-0.6ab+0.5b$

The terms are 0.3a, -0.6ab and 0.5b and the coefficients are 0.3, -0.6 and 0.5.

$x+y$

Binomial.

$1000$

Monomial.

$x+x^2+x^3+x^4$

This polynomial does not fit in any of these three categories.

$7+y-5x$

Trinomial.

$2y-3y^2$

Binomial.

$2y-3y^2+4y^3$

Trinomial.

$5x-4y+3xy$

Trinomial.

$4z-15z^2$

Binomial.

$ab+bc+cd+da$

This polynomial does not fit in any of these three categories.

$pqr$

Monomial.

$p^2q+pq^2$

Binomial.

$2p+2q$

Binomial.

Question:

$ab-bc , bc -ca, ca-ab$

ab-bc+bc-ca+ca-ab=0.

Question:3

$a-b+ab, b-c+bc, c-a+ac$

$\\a-b+ab+b-c+bc+c-a+ac\\ =(a-a)+(b-b)+(c-c)+ab+bc+ac\\ =ab+bc+ca$

$2p^2q^2-3pq+4, 5+7pq-3p^2q^2$

$\\2p^{2}q^{2}-3pq+4+5+7pq-3p^{2}q^{2}\\ =(2-3)p^{2}q^{2} +(-3+7)pq +4+5\\ =-p^{2}q^{2}+4pq+9$

$l^2+m^2+n^2 , n^2+l^2, 2lm+2mn+2nl$

$\\l^{2}+m^{2}+n^{2}+n^{2}+l^{2}+2lm+2mn+2nl\\ =2l^{2}+m^{2}+2n^{2}+2lm+2mn+2nl$

12a-9ab+5b-3-(4a-7ab+3b+12)
=(12-4)a +(-9+7)ab+(5-3)b +(-3-12)
=8a-2ab+2b-15

$\\5xy-2yz-2zx+10xyz-(3xy+5yz-7zx)\\ =(5-3)xy+(-2-5)yz+(-2+7)zx+10xyz\\ =2xy-7yz+5zx+10xyz$

$\\18-3p-11q+5pq-2pq^{2}+5p^{2}q-(4p^{2}q-3pq+5pq^{2}-8p+7q-10)\\ =18-(-10)-3p-(-8p)-11q-7q+5pq-(-3pq)-2pq^{2}-5pq^{2}+5p^{2}q-4p^{2}q\\ =28+5p-18q+8pq-7pq^{2}+p^{2}q$

NCERT class 8 maths chapter 9 question answer - Topic 9.7.2 Multiplying Three or More Monomials

First find $4x\times 5y$ and multiply it by $7z$ ; or first find $5y \times 7z$ and multiply it by $4x$ .

$\\4x\times 5y\times 7z\\ =(4x\times 5y)\times 7z\\ =20xy\times 7z\\ =140xyz\\ \\4x\times 5y\times 7z\\ =(5y\times 7z)\times 4x\\ =35yz\times 4x\\ =140xyz$

We observe that the result is same in both cases and the result does not depend on the order in which multiplication has been carried out.

Class 8 maths chapter 9 question answer - exercise: 9.2

Question:

$4,7p$

$4\times 7p=28p$

Question:

$-4p,7p$

$\\-4p\times 7p\\=(-4\times 7)p\times p\\=-28p^{2}$

Question:

$-4p,7pq$

$-4p\times 7pq\\=(-4\times 7)p\times pq\\=-28p^{2}q$

Question:

$4p^3,-3p$

$\\4p^{3}\times (-3p)\\ =4\times (-3)p^{3}\times p\\=-12p^{4}$

$4p,0$

$\\4p\times 0=0$

$(p,q)$

The question can be solved as follows

$\\Area=length\times breadth\\ =(p\times q)\\ =pq$

$(10m,5n)$

the area is calculated as follows

$\\Area=length\times breadth\\ =10m\times 5n\\ =50mn$

$(20x^2,5y^2)$

the following is the solution

$\\Area=length\times breadth\\ =20x^{2}\times 5y^{2}\\ =100x^{2}y^{2}$

$(4x,3x^2)$

area of rectangles is

$\\Area=length\times breadth\\ =4x\times 3x^{2}\\ =12x^{3}$

$(3mn,4np)$

The area is calculated as follows

$\\Area=length\times breadth\\ =3mn\times 4np\\ =12mn^{2}p$

Question:3 Complete the table of products.

 First monomial $\rightarrow$ Second monomial $\downarrow$ $2x$ $-5y$ $3x^2$ $-4xy$ $7x^2y$ $-9x^2y^2$ $2x$ $4x^2$ ... ... ... ... ... $-5y$ ... ... $-15x^2y$ ... ... ... $3x^2$ ... ... ... ... ... ... $-4xy$ ... ... ... ... ... ... $7x^2y$ ... ... ... ... ... ... $-9x^2y^2$ ... ... ... ... ... ...

 First monomial $\rightarrow$ Second monomial $\downarrow$ $2x$ $-5y$ $3x^{2}$ $-4xy$ $7x^{2}y$ $-9x^{2}y^{2}$ $2x$ $4x^{2}$ $-10xy$ $6x^{3}$ $-8x^{2}y$ $14x^{3}y$ $-18x^{3}y^{2}$ $-5y$ $-10xy$ $25y^{2}$ $-15x^{2}y$ $20xy^{2}$ $-35x^{2}y^{2}$ $45x^{2}y^{3}$ $3x^{2}$ $6x^{3}$ $-15x^{2}y^{}$ $9x^{4}$ $-12x^{3}y$ $21x^{4}y$ $-27x^{4}y^{2}$ $-4xy$ $-8x^{2}y$ $20xy^{2}$ $-12x^{3}y$ $16x^{2}y^{2}$ $-28x^{3}y$ $36x^{3}y^{3}$ $7x^{2}y$ $14x^{3}y$ $-35x^{2}y^{2}$ $21x^{4}y$ $-28x^{3}y^{2}$ $49x^{4}y^{2}$ $-63x^{4}y^{3}$ $-9x^{2}y^{2}$ $-18x^{3}y^{2}$ $45x^{2}y^{3}$ $-27x^{4}y^{2}$ $36x^{3}y^{3}$ $-63x^{4}y^{3}$ $81x^{4}y^{4}$

$5a, 3a^2, 7a^4$

$\\Volume=length\times breadth\times height\\ =5a\times 3a^{2}\times 7a^{4}\\ =15a^{3}\times 7a^{4}\\ =105a^{7}$

$2p,4q,8r$

the volume of rectangular boxes with the following length, breadth and height is

$\\Volume=length\times breadth\times height\\ =2p\times 4q\times 8r\\ =8pq\times 8r\\ =64pqr$

$xy, 2x^2y, 2xy^2$

the volume of rectangular boxes with the following length, breadth and height is

$\\Volume=length\times breadth\times height\\ =xy\times 2x^{2}y\times 2xy^{2}\\ =2x^{3}y^{2}\times 2xy^{2}\\ =4x^{4}y^{4}$

$a, 2b, 3c$

the volume of rectangular boxes with the following length, breadth and height is

$\\Volume=length\times breadth\times height\\ =a\times 2b\times 3c\\ =2ab\times 3c\\ =6abc$

Question:5(i) Obtain the product of

$xy,yz,zx$

the product

$\\xy\times yz\times zx\\ =xy^{2}z\times zx\\ =x^{2}y^{2}z^{2}$

Question:5(ii) Obtain the product of

$a,-a^2,a^3$

the product

$\\a\times (-a^{2})\times a^{3}\\ =-a^{^{3}}\times a^{3} =-a^{6}$

Question:5(iii) Obtain the product of

$2,\ 4y,\ 8y^{2},\ 16y^{3}$

the product

$\\2\times 4y\times 8y^{2}\times 16y^{3}\\ =8y\times 8y^{2}\times 16y^{3}\\ =64y^{3}\times 16y^{3}\\ =1024y^{6}$

Question:5(iv) Obtain the product of

$a, 2b, 3c, 6abc$

the product

$\\a\times 2b\times 3c\times 6abc\\ =2ab\times 3c\times 6abc\\ =6abc\times 6abc\\ =36a^{2}b^{2}c^{2}$

Question:5(v) Obtain the product of

$m, -mn, mnp$

the product

$\\m\times (-mn)\times mnp\\ =-m^{2}n\times mnp\\ =-m^{3}n^{2}p$

Class 8 maths chapter 9 NCERT solutions - Topic 9.8.1 Multiplying a Monomial by a Binomial

Question:(i) Find the product

$2x(3x+5xy)$

Using distributive law,

$2x(3x + 5xy) = 6x^2 + 10x^2y$

Question:(ii) Find the product

$a^2(2ab-5c)$

Using distributive law,

We have : $a^2(2ab-5c) = 2a^3b - 5a^2c$

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities - Topic 9.8.2 Multiplying A Monomial By A Trinomial

Question:1 Find the product:

$(4p^2+5p+7)\times 3p$

By using distributive law,

$(4p^2+5p+7)\times 3p = 12p^3 + 15p^2 + 21p$

Class 8 maths chapter 9 NCERT solutions - exercise: 9.3

$4p, q+r$

Multiplication of the given expression gives :

By distributive law,

$(4p)(q+r) = 4pq + 4pr$

$ab, a-b$

We have ab, (a-b).

Using distributive law we get,

$ab(a-b) = a^2b - ab^2$

$a+b, 7a^2b^2$

Using distributive law we can obtain multiplication of given expression:

$(a + b)(7a^2b^2) = 7a^3b^2 + 7a^2b^3$

$a^2-9,4a$

We will obtain multiplication of given expression by using distributive law :

$(a^2 - 9 )(4a) = 4a^3 - 36a$

$pq+qr+rp, 0$

Using distributive law :

$(pq + qr + rp)(0) = pq(0) + qr(0) + rp(0) = 0$

Question:2 Complete the table

 First expression Second expression Product (i) $a$ $b+c+d$ ... (ii) $x+y-5$ $5xy$ ... (iii) $p$ $6p^2-7p+5$ ... (iv) $4p^2q^2$ $p^2-q^2$ ... (v) $a+b+c$ $abc$ ...

We will use distributive law to find product in each case.

 First expression Second expression Product (i) $a$ $b+c+d$ $ab + ac+ ad$ (ii) $x+y-5$ $5xy$ $5x^2y + 5xy^2 - 25xy$ (iii) $p$ $6p^2-7p+5$ $6p^3 - 7p^2 + 5p$ (iv) $4p^2q^2$ $p^2-q^2$ $4p^4q^2 - 4p^2q^4$ (v) $a+b+c$ $abc$ $a^2bc + ab^2c + abc^2$

Question:3(i) Find the product.

$(a^2)\times (2a^{22})\times (4a^{26})$

Opening brackets :

$(a^2)\times (2a^{22})\times (4a^{26}) = (a^2\times2a^{22})\times(4a^{26}) = 2a^{24}\times4a^{26}$

or $=8a^{50}$

Question:3(ii) Find the product.

$(\frac{2}{3}xy)\times (\frac{-9}{10}x^2y^2)$

We have,

$(\frac{2}{3}xy)\times (\frac{-9}{10}x^2y^2) = \frac{-3}{5}x^3y^3$

Question:3(iii) Find the product.

$(\frac{-10}{3}pq^3) \times (\frac{6}{5}p^3q)$

We have

$(\frac{-10}{3}pq^3) \times (\frac{6}{5}p^3q) = -4p^4q^4$

Question:3(iv) Find the product.

$x \times x^2\times x^3\times x^4$

We have $x \times x^2\times x^3\times x^4$

$x \times x^2\times x^3\times x^4 = (x \times x^2)\times x^3\times x^4$

or $(x^3)\times x^3\times x^4$

$= x^{10}$

(i) $\small x=3$

(a) We have

$3x(4x-5)+3 = 12x^2 - 15x + 3$

Put x = 3,

We get : $12(3)^2 - 15(3) + 3 = 12(9) - 45 + 3 = 108 - 42 = 66$

(ii) $\small x=\frac{1}{2}$

We have

$\small 3x(4x-5)+3 = 12x^2 -15x + 3$

Put

$x = \frac{1}{2}$

. So We get,

$12x^2 -15x + 3 = 12(\frac{1}{2})^2 - 15(\frac{1}{2}) + 3 = 6 - \frac{15}{2} = \frac{-3}{2}$

(i) $\small a =0$

We have : $\small a(a^2+a+1) +5 = a^3 + a^2 + a +5$

Put a = 0 : $= 0^3 + 0^2 + 0 + 5 = 5$

(ii) $\small a=1$

We have $\small a(a^2+a+1)+5 = a^3 + a^2 + a + 5$

Put a = 1 ,

we get : $1^3 + 1^2 + 1 + 5 = 1 + 1 + 1+ 5 = 8$

(iii) $\small a=-1$

We have $\small a(a^2+a+1)+5$ .

or $\small a(a^2+a+1)+5 = a^3+a^2+a+5$

Put a = (-1)

$= (-1)^3+(-1)^2+(-1)+5 = -1 + 1 -1 +5 = 4$

(a)First we will solve each brackets individually.

$p(p-q) = p^2 - pq$ ; $q(q-r) = q^2 - qr$ ; $r(r-p) = r^2 - rp$

Addind all we get : $p^2 - pq + q^2 - qr + r^2 - rp$

$= p^2 + q^2 + r^2 -pq-qr-rp$

Question:5(b) Add: $\small 2x(z-x-y)$ and $\small 2y(z-y-x)$

Firstly, open the brackets:

$\small 2x(z-x-y) = 2xz -2x^2-2xy$

and $\small 2y(z-y-x) = 2yz-2y^2-2xy$

$\small 2xz -2x^2-2xy +2yz-2y^2-2xy$

or $\small = -2x^2-2y^2-4xy + 2xz+2yz$

Question:5(c) Subtract: $\small 3l(l-4m+5n)$ from $\small 4l(10n-3m+2l)$

At first we will solve each bracket individually,

$\small 3l(l-4m+5n) = 3l^2 - 12lm + 15ln$

and $\small 4l(10n-3m+2l) = 40ln - 12ml + 8l^2$

Subtracting:

$\small 40ln - 12ml + 8l^2 - (3l^2 - 12lm+15ln)$

or $\small = 40ln - 12ml + 8l^2 - 3l^2 + 12lm-15ln$

or $\small = 25ln + 5l^2$

Question:5(d) Subtract: $\small 3a(a+b+c)-2b(a-b+c)$ from $\small 4c(-a+b+c)$

Solving brackets :

$3a(a+b+c)-2b(a-b+c) = 3a^2+3ab+3ac - 2ab+2b^2-2bc$

$= 3a^2+ab+3ac+ 2b^2-2bc$

and $\small 4c(-a+b+c) = -4ac +4bc + 4c^2$

Subtracting : $\small -4ac +4bc + 4c^2 -(3a^2 + ab + 3ac+2b^2-2bc)$

$\small = -4ac + 4bc+4c^2-3a^2-ab-3ac-2b^2+2bc$

$\small =-3a^2 -2b^2+4c^2-ab+ 6bc-7ac$

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions And Identities-Exercise: 9.4

Question:1(i) Multiply the binomials.

$\small (2x+5)$ and $\small (4x-3)$

We have (2x + 5) and (4x - 3)
(2x + 5) X (4x - 3) = (2x)(4x) + (2x)(-3) + (5)(4x) + (5)(-3)
= 8 $x^{2}$ - 6x + 20x - 15
= 8 $x^{2}$ + 14x -15

Question:1(ii) Multiply the binomials.

$\small (y-8)$ and $\small (3y-4)$

We need to multiply (y - 8) and (3y - 4)
(y - 8) X (3y - 4) = (y)(3y) + (y)(-4) + (-8)(3y) + (-8)(-4)
= 3 $y^{2}$ - 4y - 24y + 32
= 3 $y^{2}$ - 28y + 32

Question:1(iii) Multiply the binomials

$\small (2.5l-0.5m)$ and $\small (2.5l+0.5m)$

We need to multiply (2.5l - 0.5m) and (2.5l + 0..5m)
(2.5l - 0.5m) X (2.5l + 0..5m) = $(2.5l)^{2} - (0.5m)^{2}$ using $(a-b)(a+b) = (a)^{2} - (b)^{2}$
= 6.25 $l^{2}$ - 0.25 $m^{2}$

Question:1(iv) Multiply the binomials.

$\small (a+3b)$ and $\small (x+5)$

(a + 3b) X (x + 5) = (a)(x) + (a)(5) + (3b)(x) + (3b)(5)
= ax + 5a + 3bx + 15b

Question:1(v) Multiply the binomials.

$\small (2pq+3q^2)$ and $\small (3pq-2q^2)$

(2pq + 3q 2 ) X (3pq - 2q 2 ) = (2pq)(3pq) + (2pq)(-2q 2 ) + ( 3q 2 )(3pq) + (3q 2 )(-2q 2 )
= 6p 2 q 2 - 4pq 3 + 9pq 3 - 6q 4
= 6p 2 q 2 +5pq 3 - 6q 4

Question:1(vi) Multiply the binomials.

$\small (\frac{3}{4}a^2+3b^2)$ and $\small 4(a^2-\frac{2}{3}b^2)$

Multiplication can be done as follows

$\small (\frac{3}{4}a^2+3b^2)$ X $\small (4a^2-\frac{8}{3}b^2)$ = $\frac{3a^{2}}{4} \times 4a^{2} + \frac{3a^{2}}{4} \times (-\frac{8b^{2}}{3}) + 3b^{2} \times 4a^{2} + 3b^{2} \times (-\frac{8b^{2}}{3})$

= $3a^{4} - 2a^{2}b^{2} + 12a^{2}b^{2} - 8b^{4}$

= $3a^{4} + 10a^{2}b^{2} - 8b^{4}$

Question:2(i) Find the product.

$\small (5-2x)$ $\small (3+x)$

(5 - 2x) X (3 + x) = (5)(3) + (5)(x) +(-2x)(3) + (-2x)(x)
= 15 + 5x - 6x - 2 $x^{2}$
= 15 - x - 2 $x^{2}$

Question:2(ii) Find the product.

$\small (x+7y)(7x-y)$

(x + 7y) X (7x - y) = (x)(7x) + (x)(-y) + (7y)(7x) + (7y)(-y)
= 7 $x^{2}$ - xy + 49xy - 7 $y^{2}$
= 7 $x^{2}$ + 48xy - 7 $y^{2}$

Question:2(iii) Find the product.

$\small (a^2+b)(a+b^2)$

( $a^{2}$ + b) X (a + $b^{2}$ ) = ( $a^{2}$ )(a) + ( $a^{2}$ )( $b^{2}$ ) + (b)(a) + (b)( $b^{2}$ )
= $a^{3 } + a^{2}b^{2} + ab + b^{3}$

Question:2(iv) Find the product.

$\small (p^2-q^2)(2p+q)$

following is the solution

( $p^{2}- q^{2}$ ) X (2p + q) = $(p^{2})(2p) + (p^{2})(q) + (-q^{2})(2p) + (-q^{2})(q)$
$2p^{3} + p^{2}q - 2q^{2}p - q^{3}$

Question:3(i) Simplify.

$\small (x^2-5)(x+5)+25$

this can be simplified as follows

( $x^{2}$ -5) X (x + 5) + 25 = ( $x^{2}$ )(x) + ( $x^{2}$ )(5) + (-5)(x) + (-5)(5) + 25
= $x^{3} + 5x^{2} - 5x -25 + 25$
= $x^{3} + 5x^{2} - 5x$

Question:3(ii) Simplify .

$(a^2+5)(b^3+3)+5$

This can be simplified as

( $a^{2}$ + 5) X ( $b^{3}$ + 3) + 5 = ( $a^{2}$ )( $b^{3}$ ) + ( $a^{2}$ )(3) + (5)( $b^{3}$ ) + (5)(3) + 5
= $a^{2}b^{3} + 3a^{2} + 5b^{3} + 15+5$
= $a^{2}b^{3} + 3a^{2} + 5b^{3} + 20$

Question:3(iii) Simplify.

$(t+s^2)(t^2-s)$

simplifications can be

(t + $s^{2}$ )( $t^{2}$ - s) = (t)( $t^{2}$ ) + (t)(-s) + ( $s^{2}$ )( $t^{2}$ ) + ( $s^{2}$ )(-s)
= $t^{3} - ts + s^{2}t^{2} - s^{3}$

Question:3(iv) Simplify.

$(a+b)(c-d)+(a-b)(c+d)+2 (ac+bd)$

(a + b) X ( c -d) + (a - b) X (c + d) + 2(ac + bd )
= (a)(c) + (a)(-d) + (b)(c) + (b)(-d) + (a)(c) + (a)(d) + (-b)(c) + (-b)(d) + 2(ac + bd )
= ac - ad + bc - bd + ac +ad -bc - bd + 2(ac + bd )
= 2(ac - bd ) + 2(ac +bd )
= 2ac - 2bd + 2ac + 2bd
= 4ac

Question:3(v) Simplify.

$(x+y)(2x+y)+(x+2y)(x-y)$

(x + y) X ( 2x + y) + (x + 2y) X (x - y)
=(x)(2x) + (x)(y) + (y)(2x) + (y)(y) + (x)(x) + (x)(-y) + (2y)(x) + (2y)(-y)
= 2 $x^{2}$ + xy + 2xy + $y^{2}$ + $x^{2}$ - xy + 2xy - 2 $y^{2}$
=3 $x^{2}$ + 4xy - $y^{2}$

Question:3(vi) Simplify.

$(x+y)(x^2-xy+y^2)$

simplification is done as follows

(x + y) X ( $x^{2} -xy + y^{2}$ ) = x X ( $x^{2} -xy + y^{2}$ ) + y ( $x^{2} -xy + y^{2}$ )
= $x^{3} -x^{2}y + xy^{2} + yx^{2} - xy^{2} + y^{3}$
= $x^{3}+ y^{3}$

Question:3(vii) Simplify.

$(1.5x-4y)(1.5x+4y+3)-4.5x+12y$

(1.5x - 4y) X (1.5x + 4y + 3) - 4.5x + 12y = (1.5x) X (1.5x + 4y + 3) -4y X (1.5x + 4y + 3) - 4.5x + 12y
= 2.25 $x^{2}$ + 6xy + 4.5x - 6xy - 16 $y^{2}$ - 12y -4.5x + 12 y
= 2.25 $x^{2}$ - 16 $y^{2}$

Question:3(viii) Simplify.

$(a+b+c)(a+b-c)$

(a + b + c) X (a + b - c) = a X (a + b - c) + b X (a + b - c) + c X (a + b - c)
= $a^{2}$ + ab - ac + ab + $b^{2}$ -bc + ac + bc - $c^{2}$
= $a^{2}$ + $b^{2}$ - $c^{2}$ + 2ab

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions And Identities - Topic 9.11 Standard Identities

Identity 1 $\Rightarrow (a+b)^{2} = a^{2} + 2ab + b^{2}$
If we replace b with -b in identity 1
We get,
$a^{2} + 2a(-b) + (-b)^{2} = a^{2} - 2ab + b^{2}$
which is equal to
$(a-b)^{2}$ which is identity 2
So, we get identity 2 by replacing b with -b in identity 1

NCERT Free Solutions for Class 8 Maths Chapter 9 Algebraic Expressions And Identities - Topic 9.11 Standard Identities

Identity IV
(a + x)(b + x) = $x^{2} + (a+b)x + ab$
So, it is given that a = 2, b = 3 and x = 5
Lets put these value in identity IV
(2 + 5)(3 + 5) = $5^{2}$ + (2 + 3)5 +2 X 3
7 X 8 = 25 + 5 X 5 + 6
56 = 25 + 25 + 6
= 56
L.H.S. = R.H.S.
So, by this we can say that identity IV satisfy with given value of a,b and x

Identity IV is $\Rightarrow (a +x)(b+x) = x^{2} + (a+b)x + ab$
If a =b than

(a + x)(a + x) = $x^{2} + (a+a)x + a\times a$
$(a+x)^{2} = x^{2} + 2ax + a^{2}$
Which is identity I

Identity IV is $\Rightarrow (a+x )(b +x) = x^{2} + (a+b)x + ab$
If a = b = -c than,
(x - c)(x - c) = $x^{2} + (-c + (-c))x + (-c) \times (-c)$
$(x-c)^{2} = x^{2} + -2cx + c^{2}$
Which is identity II

Identity IV is $\Rightarrow (a+x )(b +x) = x^{2} + (a+b)x + ab$
If b = -a than,

(x + a)(x - a) = $x^{2} + (a +(-a))x + (-a) \times a$
= $x^{2} - a^{2}$
Which is identity III

Class 8 algebraic expressions and identities NCERT solutions - exercise: 9.5

$(x+3)(x+3)$

(x + 3) X (x +3) = $(x +3)^{2}$
So, we use identity I for this which is
$(a+b)^{2} = a^{2} + 2ab + b^{2}$
In this a=x and b = x
$(x+3)^{2} = x^{2} + 2(x)(3)+ 3^{2}$
= $x^{2} + 6x+ 9$

$(2y+5)(2y+5)$

(2y + 5) X ( 2y + 5) = $(2y +5)^{2}$
We use identity I for this which is
$(a+b)^{2} = a^{2} + 2ab + b^{2}$
IN this a = 2y and b = 5
$(2y+5)^{2} = (2y)^{2} + 2(2y)(5) + 5^{2}$
= $(2y+5)^{2} = 4y^{2} + 20y + 25$

$(2a-7)(2a-7)$

(2a -7) X (2a - 7) = $(2a - 7)^{2}$
We use identity II for this which is
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
in this a = 2a and b = 7
$(2a-7)^{2} = (2a)^{2} - 2(2a)(7) + 7^{2}$
= $4a^{2} - 28a + 49$

$(3a - \frac{1}{2}) (3a -\frac{1}{2} )$

$(3a - \frac{1}{2}) \times (3a -\frac{1}{2} ) = ((3a - \frac{1}{2}))^{2}$
We use identity II for this which is
$(a-b)^{2} = a^{2} -2ab + b^{2}$
in this a = 3a and b = -1/2
$(3a-\frac{1}{2})^{2} = (3a)^{2} -2(3a)(\frac{1}{2}) + (\frac{1}{2})^{2}$
= $9a^{2} -3a + \frac{1}{4}$

$(1.1m - 4)(1.1m+4)$

$(1.1m - 4)(1.1m+4)$
We use identity III for this which is
(a - b)(a + b) = $a^{2} - b^{2}$
In this a = 1.1m and b = 4
$(1.1m - 4)(1.1m+4)$ = $(1.1m)^{2} - (4)^{2}$
= 1.21 $m^{2}$ - 16

$(a^2+b^2)(-a^2+b^2)$

take the (-)ve sign common so our question becomes
- $-(a^{2}+b^{2})(a^{2}-b^{2})$
We use identity III for this which is
(a - b)(a + b) = $a^{2} - b^{2}$
In this a = $a^{2}$ and b = $b^{2}$

$-(a^{2}+b^{2})(a^{2}-b^{2})$ = $-((a^{2})^{2} -(b^{2})^{2}) = -a^{4} + b^{4}$

Question:1(vii) Use a suitable identity to get each of the following.

$(6x-7) (6x+7)$

(6x -7) X (6x - 7) = $(6x-7)^{2}$
We use identity III for this which is
(a - b)(a + b) = $a^{2} - b^{2}$
In this a = 6x and b = 7
(6x -7) X (6x - 7) = $(6x)^{2} - (7)^{2} = 36x^{2} - 49$

Question:1(viii) Use a suitable identity to get each of the following product.

$(-a+c)(-a+c)$

take (-)ve sign common from both the brackets So, our question become
(a -c) X (a -c) = $(a -c)^{2}$
We use identity II for this which is
$(a-b)^{2} =a^{2} -2ab + b^{2}$
In this a = a and b = c
$(a-c)^{2} =a^{2} -2ac + c^{2}$

$(\frac{x}{2}+ \frac{3y}{4})(\frac{x}{2}+ \frac{3y}{4})$

$(\frac{x}{2}+ \frac{3y}{4}) \times (\frac{x}{2}+ \frac{3y}{4}) = (\frac{x}{2}+ \frac{3y}{4})^{2}$

We use identity I for this which is
$(a+b)^{2} =a^{2}+2ab + b^{2}$
In this a = $\frac{x}{2}$ and b = $\frac{3y}{4}$

$(\frac{x}{2}+ \frac{3y}{4})^{2} = (\frac{x}{2})^{2} + 2 (\frac{x}{2})(\frac{3y}{4}) + (\frac{3y}{4})^{2}$
= $\frac{x^{2}}{4} + \frac{3xy}{4} + \frac{9y^{2}}{16}$

$(7a-9b)(7a-9b)$

$(7a-9b) \times (7a-9b) = (7a-9b)^{2}$

We use identity II for this which is
$(a-b)^{2} =a^{2}-2ab + b^{2}$
In this a = 7a and b = 9b
$(7a-9b)^{2} =(7a)^{2}-2(7a)(9b) + (9b)^{2}$
= $49a^{2}-126ab + 81b^{2}$

$(x+3)(x+7)$

We use identity $(x+a) (x+b) = x^2+(a+b)x+ab$
in this a = 3 and b = 7
$(x+3)(x+7)$ = $x^2+(3+7)x+3 \times 7$
= $x^2+10x+ 21$

$(4x+5)(4x+1)$

We use identity $(x+a)(x+b)=x^2+(a+b)x+ab$
In this a= 5 , b = 1 and x = 4x
$(4x+5)(4x+1)$ = $(4x)^2+(5+1)4x+(5)(1)$
= $16x^2+24x+5$

$(4x-5)(4x-1)$

We use identity $(x+a)(x+b)= x^2+(a+b)x+ab$
in this x = 4x , a = -5 and b = -1
$(4x-5)(4x-1)$ = $(4x)^2+(-5-1)4x+(-5)(-1)$
= $16x^2 - 24x+ 5$

$(4x+5)(4x-1)$

We use identity $(x+a)(x+b)=x^2+(a+b)x+ab$
In this a = 5 , b = -1 and x = 4x
$(4x+5)(4x-1)$ = $(4x)^2+(5+(-1))4x+(5)(-1)$
= $16x^2+16x- 5$

$(2x+5y)(2x+3y)$

We use identity $(x+a)(x+b)=x^2+(a+b)x+ab$
In this a = 5y , b = 3y and x = 2x
$(2x+5y)(2x+3y)$ = $(2x)^2+(5y+3y)(2x)+(5y)(3y)$
= $4x^2+16xy + 15y^{2}$

$(2a^2+9)(2a^2+5)$

We use identity $(x+a)(x+b)=x^2+(a+b)x+ab$
In this a = 9 , b = 5 and x = $2a^{2}$
$(2a^{2}+9)(2a^{2}+5)$ = $(2a^{2})^2+(9+5)2a^{2}+(9)(5)$
= $4a^{4} + 28a^{2} + 45$

$(xyz-4) (xyz-2)$

We use identity $(x+a)(x+b)=x^2+(a+b)x+ab$
In this a = -4 , b = -2 and x = xyz
$(xyz-4)(xyz-2)$ = $(xyz)^2+((-4)+(-2))xyz+(-4)(-2)$
= $x^{2}y^{2}z^{2} -6xyz + 8$

Question:3(i) Find the following squares by using the identities.

$(b-7)^2$

We use identity
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a =b and b = 7
$(b-7)^{2} = b^{2} - 2(b)(7) + 7^{2}$
= $b^{2} - 14b + 49$

Question:3(ii) Find the following squares by using the identities.

$(xy+3z)^2$

We use
$(a+b)^{2} = a^{2} + 2ab + b^{2}$

In this a = xy and b = 3z
$(xy+3z)^{2} = (xy)^{2} + 2(xy)(3z) + (3z)^{2}$
= $x^{2}y^{2} + 6xyz+ 9z^{2}$

Question:3(iii) Find the following squares by using the identities.

$(6x^2-5y)^2$

We use
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a = $6x^{2}$ and b = $5y^{2}$
$(6x-5y)^{2} = (6x)^{2} - 2(6x)(5y) + (5y)^{2}$
= $36x^{2} - 60xy + 25y^{2}$

Question:3(iv) Find the following squares by using the identities.

$(\frac{2}{3}m+\frac{3}{2}n)^2$

we use the identity
$(a+b)^{2} = a^{2} + 2ab + b^{2}$
In this a = $\frac{2m}{3}$ and b = $\frac{3n}{2}$
$(\frac{2m}{3} + \frac{3n}{2})^{2} = (\frac{2m}{3})^{2} + 2(\frac{2m}{3})( \frac{3n}{2}) + ( \frac{3n}{2})^{2}$

= $\frac{4m^{2}}{9} + 2mn + \frac{9n^{2}}{4}$

Question:3(v) Find the following squares by using the identities.

$(0.4p-0.5q)^2$

we use
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a = 0.4p and b =0.5q
$(0.4p-0.5q)^{2} = (0.4p)^{2} - 2(0.4p)(0.5q) + (0.5q)^{2}$
= $0.16p^{2} - 0.4pq + 0.25q^{2}$

Question:3(vi) Find the following squares by using the identities.

$(2xy+5y)^2$

we use the identity
$(a+b)^{2} = a^{2} + 2ab + b^{2}$
In this a = 2xy and b =5y
$(2xy+5y)^{2} = (2xy)^{2} + 2(2xy)(5y) + (5y)^{2}$
= $4x^{2}y^{2} + 20xy^{2} + 25y^{2}$

Question:4(i) Simplify:

$(a^2-b^2)^2$

we use
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a = $a^{2}$ and b = $b^{2}$
$(a^{2}-b^{2})^{2} = (a^{2})^{2} - 2(a^{2})(b^{2}) + (b^{2})^{2}$
= $a^{4} - 2a^{2}b^{2} + b^{4}$

Question:4(ii) Simplify.

$(2x+5)^2-(2x-5)^2$

we use
$a^{2} - b^{2} = (a-b)(a+b)$
In this a = (2x + 5) and b = (2x - 5)
$(2x + 5)^{2} - (2x - 5)^{2} = ( (2x + 5)- (2x - 5))( (2x + 5)+ (2x - 5))$
= $( 2x + 5- 2x + 5)( 2x + 5+ 2x - 5)$
= (4x)(10)
=40x

or

remember that

$(a+b)^2-(a-b)^2=4ab$

here a= 2x, b= 5

$4ab=4\times 2x \times 5=40x$

Question:4(iii) Simplify.

$(7m-8n)^2+(7m+8n)^2$

we use
$(a-b)^{2} = a^{2} -2ab + b^{2}$ and $(a+b)^{2} = a^{2} +2ab + b^{2}$
In this a = 7m and b = 8n
$(7m-8n)^{2} = (7m)^{2} -2(7m)(8n) + (8n)^{2}$
= $49m^{2} -112mn + 64n^{2}$
and
$(7m+8n)^{2} = (7m)^{2} +2(7m)(8n) + (8n)^{2}$
= $49m^{2} +112mn + 64n^{2}$

So, $(7m - 8n)^{2} + (7m + 8n)^{2}$ = $49m^{2} -112mn + 64n^{2}$ + $49m^{2} +112mn + 64n^{2}$
= $2(49m^{2} + 64n^{2})$

or

remember that

$(a-b)^2+(a+b)^2=2(a^2+b^2)$

Question: 4(iv) Simplify.

$(4m+5n)^2+(5m+4n)^2$

we use
$(a+b)^{2} = a^{2} +2ab + b^{2}$
1 ) In this a = 4m and b = 5n

$(4m+5n)^{2} = (4m)^{2} +2(4m)(5n) + (5n)^{2}$
= $16m^{2} +40mn + 25n^{2}$
2 ) in this a = 5m and b = 4n
$(5m+4n)^{2} = (5m)^{2} +2(5m)(4n) + (4n)^{2}$
= $25m^{2} +40mn + 16n^{2}$

So, $(4m + 5n)^{2} + (5m + 4n)^{2}$ = $16m^{2} +40mn + 25n^{2}$ + $25m^{2} +40mn + 16n^{2}$
= $41m^{2} +80mn + 41n^{2}$

Question: 4(v) Simplify.

$(2.5p-1.5q)^2-(1.5p-2.5q)^2$

we use
$a^{2}- b^{2} = (a-b)(a+b)$
1 ) In this a = (2.5p- 1.5q) and b = (1.5p - 2.5q)
$(2.5p- 1.5q)^{2}- (1.5p- 2.5q)^{2} = ( (2.5p- 1.5q)- (1.5p- 2.5q))( (2.5p- 1.5q)+ (1.5p- 2.5q))$
= $( 2.5p- 1.5q- 1.5p + 2.5q)(2.5p- 1.5q+ 1.5p- 2.5q)$
= 4(p + q ) (p - q)
= 4 $(p^{2} - q^{2})$

Question:4(vi) Simplify.

$(ab+bc)^2-2ab^2c$

We use identity
$(a+b)^{2} = a^{2} + 2ab + b^{2}$
In this a = ab and b = bc
$(ab+bc)^{2} = (ab)^{2} + 2(ab)(bc) + (bc)^{2}$
= $a^{2}b^{2} + 2ab^{2}c + b^{2}c^{2}$
Now, $a^{2}b^{2} + 2ab^{2}c + b^{2}c^{2}$ - $2ab^{2}c$
= $a^{2}b^{2} + b^{2}c^{2}$

Question:4(vii) Simplify.

$(m^2 -n^2m)^2+2m^3n^2$

We use identity
$(a-b)^{2} = a^{2} - 2ab + b^{2}$
In this a = $m^{2}$ and b = $n^{2}m$
$(m^{2}-n^{2}m)^{2} = (m^{2})^{2} - 2(m^{2})(n^{2}m) + (n^{2}m)^{2}$
= $m^{4} - 2m^{3}n^{2} + n^{4}m^{2}$
Now, $m^{4} - 2m^{3}n^{2} + n^{4}m^{2}$ + $2m^{3}n^{2}$
= $m^{4} + n^{4}m^{2}$

Question:5(i) Show that

$(3x+7)^2-84x=(3x-7)^2$

L.H.S. = $(3x+7)^2 - 84x = 9x^2 + 42x + 49 - 84x$

$= 9x^2 - 42 x +49$

$= (3x - 7)^2$

= R.H.S.

Hence it is prooved

Question:5(ii) Show that

$(9p-5q)^2+180pq=(9p+5q)^2$

L.H.S. = $(9p-5q)^2+180pq = 81p^2 - 90pq + 25q^2 + 180pq$ (Using $(a-b)^2 = a^2 - 2ab + b^2$ )

$= 81p^2 +90pq + 25q^2$

$= (9p + 5q)^2$ $\left ( (a+b)^2 = a^2 + 2ab + b^2 \right )$

= R.H.S.

Question:5(iii) Show that.

$(\frac{4}{3}m-\frac{3}{4}n)^2 +2mn=\frac{16}{9}m^2+\frac{9}{16}n^2$

First we will solve the LHS :

$= (\frac{4}{3}m-\frac{3}{4}n)^2 +2mn = \frac{16}{9}m^2 - 2mn + \frac{9}{16}n^2 + 2mn$

or $= \frac{16}{9}m^2 + \frac{9}{16}n^2$

= RHS

Question:5(iv) Show that.

$(4pq+3q)^2-(4pq-3q)^2=48pq^2$

Opening both brackets we get,

$(4pq+3q)^2-(4pq-3q)^2 = 16p^2q^2 + 24pq^2 + 9q^2 - (16p^2q^2 - 24pq^2 + 9q^2)$

$= 16p^2q^2 + 24pq^2 + 9q^2 - 16p^2q^2 + 24pq^2 - 9q^2)$

$= 48pq^2$

= R.H.S.

Question:5(v) Show that

$(a-b)(a+b) + (b-c) ( b +c)+(c-a)(c+a)=0$

Opening all brackets from the LHS, we get :

$(a-b)(a+b) + (b-c) ( b +c)+(c-a)(c+a)\\\\ =\ a^2 +ab - ab- b^2 + b^2+bc - bc -c^2 + c^2 +ca - ac -a^2$

$= 0$ = RHS

Question:6(i) Using identities, evaluate.

We will use the identity:

$(a + b)^2 = a^2 + 2ab + b^2$

So, $71^2 = (70 +1)^2 = 70^2 + 2(70)(1) + 1^2$

$= 4900 + 140 + 1$

$= 5041$

Question:6(ii) Using identities, evaluate.

$99^2$

Here we will use the identity :

$(a - b)^2 = a^2 - 2ab + b^2$

So : $99^2 = (100 - 1) ^2 = 100^2 - 2(100)(1) + 1^2$

or $= 10000 - 200 + 1$

$= 9801$

Question:6(iii) Using identities, evaluate.

$102^2$

Here we will use the identity :

$(a+b)^2 = a^2 +2ab + b^2$

So :

$102^2 = (100 + 2)^2 = 100^2 + 2(100)(2) + 2^2$

or $= 10000 + 400 + 4$

$= 10404$

Question:6(iv) Using identities, evaluate.

$998^2$

Here we will the identity :

$998^2=(1000 - 2)^2 = 1000^2 - 2(1000)(2) + 2^2$

or $= 1000000 - 4000+ 4$

or $= 996004$

Question:6(v) Using identities, evaluate.

Here we will use :

$(a + b)^2 = a^2 + 2ab + b^2$

Thus

$(5.2)^2 = (5.0 + 0.2)^2 = 5^2 + 2(5)(0.2) + (0.2)^2$

or $= 25 + 2 + 0.04$

$= 27.04$

Question:6(vi) Using identities, evaluate.

This can be written as :

$297\times303 = (300-3)\times(300+3)$

using $(a-b)(a+b)=a^2-b^2$

or $= 90000 - 9$

$= 89991$

Question:6(vii) Using identities, evaluate.

This can be written in form of :

$78\times82 = (80 - 2) \times(80+2)$

or $= 80^2 - 2^2$ $\because \left ( a-b \right )\left ( a+b \right ) = a^2 - b^2$

or $= 6400- 4 = 6396$

Question:6(viii) Using identities, evaluate.

Here we will use the identity :

$(a - b)^2 = a^2 - 2ab + b^2$

Thus :

$8.9^2 = (9 - 0.1) ^2 = 9^2 - 2(9)(0.1) + 0.1^2$

or $= 81 - 1.8 + 0.01$

or $= 79.21$

Question:6(ix) Using identities, evaluate.

$10.5\times9.5$

This can be written as :

$10.5\times9.5 = (10 +0.5)\times(10-0.5)$

or $= 10^2 - 0.5^2$ $\because (a+b)(a-b) = a^2 - b^2$

or $= 100 - 0.25$

or $= 99.75$

$51^2-49^2$

We know,

$a^2-b^2=(a+b)(a-b)$

Using this formula,

$51^2-49^2$ = (51 + 49)(51 - 49)

= (100)(2)

= 200

$(1.02)^2-(0.98)^2$

We know,

$a^2-b^2=(a+b)(a-b)$

Using this formula,

$(1.02)^2-(0.98)^2$ = (1.02 + 0.98)(1.02 - 0.98)
= (2.00)(0.04)

= 0.08

$153^2-147^2$

We know,

$a^2-b^2=(a+b)(a-b)$

Using this formula,

$153^2-147^2$ = (153 - 147)(153 +147)

=(6) (300)

= 1800

$12.1^2-7.9^2$

We know,

$a^2-b^2=(a+b)(a-b)$

Using this formula,

$(1.02)^2-(0.98)^2$ = (1.02 + 0.98)(1.02 - 0.98)

= (2.00)(0.04)

= 0.08

We know,

$(x+a)(x+b)=x^2+(a+b)x+ab$

Using this formula,

$103 \times 104$ = (100 + 3)(100 + 4)

Here x =100, a = 3, b = 4

$\therefore$ $103 \times 104$ $= 100^2+(3+4)100+(3\times4)$

$= 10000+1200+12$

= 11212

We know,

$(x+a)(x+b)=x^2+(a+b)x+ab$

Using this formula,

$5.1\times 5.2$ = (5 + 0.1)(5 + 0.2)

Here x =5, a = 0.1, b = 0.2

$\therefore$ $5.1\times 5.2$ $=5^2+(0.1 + 0.2)5+(0.1\times0.2)$

$= 25+1.5+0.02$

= 26.52

We know,

$(x+a)(x+b)=x^2+(a+b)x+ab$

Using this formula,

$103 \times 98$ = (100 + 3)(100 - 2) = (100 + 3){100 + (-2)}

Here x =100, a = 3, b = -2

$\therefore$ $103 \times 98$ $= 100^2+(3 + (-2))100+(3\times(-2))$

$= 10000+100-6$

= 10094

We know,

$(x+a)(x+b)=x^2+(a+b)x+ab$

Using this formula,

$9.7 \times 9.8$ = (10 - 0.3)(10 - 0.2) = {10 + (-0.3)}{10 + (-0.2)}

Here x =10, a = -0.3, b = -0.2

$\therefore$ $9.7 \times 9.8$ $= 10^2+((-0.3) + (-0.2))10+((-0.3)\times(-0.2))$

$= 100-5+0.06$

= 95.

NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities - Topics

• What are Expressions?
• Terms, Factors and Coefficients
• Monomials, Binomials,f and Polynomials
• Like and Unlike Terms
• Addition and Subtraction of Algebraic Expressions
• Multiplication of Algebraic Expressions: Introduction
• Multiplying a Monomial by a Monomial
• Multiplying two monomials
• Multiplying three or more monomials
• Multiplying a Monomial by a Polynomial
• Multiplying a monomial by a binomial
• Multiplying a monomial by a trinomial
• Multiplying a Polynomial by a Polynomial
• Multiplying a binomial by a binomial
• Multiplying a binomial by a trinomial
• What is an Identity?
• Standard Identities
• Applying Identities

NCERT Solutions for Class 8 Maths - Chapter Wise

 Chapter -1 Rational Numbers Chapter -2 Linear Equations in One Variable Chapter-3 Understanding Quadrilaterals Chapter-4 Practical Geometry Chapter-5 Data Handling Chapter-6 Squares and Square Roots Chapter-7 Cubes and Cube Roots Chapter-8 Comparing Quantities Chapter-9 Algebraic Expressions and Identities Chapter-10 Visualizing Solid Shapes Chapter-11 Mensuration Chapter-12 Exponents and Powers Chapter-13 Direct and Inverse Proportions Chapter-14 Factorization Chapter-15 Introduction to Graphs Chapter-16 Playing with Numbers

NCERT Solutions for Class 8 - Subject Wise

Some Important Identities From NCERT Book for Class 8 Chapter 9 Algebraic Expressions And Identities

• $(a+b)^2=(a^2+2ab+b^2)$

you can write

$(a+b)^2=(a+b)(a+b)$

Can be simplified as follows

$(a+b)(a+b)=a\times a+a\times b+a\times b+b\times b$

$a\times a+a\times b+a\times b+b\times b=a^2+ab+ab+b^2$

$=a^2+2ab+b^2$

$(a+b)^2=(a^2+2ab+b^2)$

• $(a-b)^2=(a^2-2ab+b^2)$
• $(a-b)(a+b)=a^2-b^2$
• $(x+a)(x+b)=x^{2}+(a+b) x+a b$

You can form the above identities by yourself. These above identities have been used in many problems of NCERT solutions for class 8 maths chapter 9 algebraic expression and identities.

Also Check NCERT Books and NCERT Syllabus here

1. What are the important topics of NCERT syllabus chapter Algebraic Expressions and Identities ?

Addition and subtraction of the algebraic expression, multiplication of the algebraic expression, standard identities, and application of identities are important topics in this chapter.

2. Does CBSE class maths is tough ?

CBSE class 8 maths is not tough at all. It teaches a very basic and simple maths.

3. How many chapters are there in the CBSE class 8 maths ?

There are 16 chapters starting from rational number to playing with numbers in the CBSE class 8 maths.

4. Where can I find the complete solutions of NCERT for class 8 ?

Here you will get the detailed NCERT solutions for class 8 by clicking on the link.

5. Where can I find the complete solutions of NCERT for class 8 maths ?

Here you will get the detailed NCERT solutions for class 8 maths by clicking on the link.

6. Which is the official website of NCERT ?

NCERT official is the official website of the NCERT where you can get NCERT textbooks and syllabus from class 1 to 12.

Upcoming School Exams

All India Sainik Schools Entrance Examination

Application Date:06 November,2023 - 15 December,2023

National Institute of Open Schooling 12th Examination

Application Date:20 November,2023 - 19 December,2023

National Institute of Open Schooling 10th examination

Application Date:20 November,2023 - 19 December,2023

West Bengal Board 12th Examination

Exam Date:30 November,2023 - 14 December,2023

National Means Cum-Merit Scholarship

Application Date:03 December,2023 - 18 December,2023

Get answers from students and experts

A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

 Option 1) Option 2) Option 3) Option 4)

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

 Option 1) 2.45×10−3 kg Option 2)  6.45×10−3 kg Option 3)  9.89×10−3 kg Option 4) 12.89×10−3 kg

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

 Option 1) Option 2) Option 3) Option 4)

A particle is projected at 600   to the horizontal with a kinetic energy . The kinetic energy at the highest point

 Option 1) Option 2) Option 3) Option 4)

In the reaction,

 Option 1)   at STP  is produced for every mole   consumed Option 2)   is consumed for ever      produced Option 3) is produced regardless of temperature and pressure for every mole Al that reacts Option 4) at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, will contain 0.25 mole of oxygen atoms?

 Option 1) 0.02 Option 2) 3.125 × 10-2 Option 3) 1.25 × 10-2 Option 4) 2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

 Option 1) decrease twice Option 2) increase two fold Option 3) remain unchanged Option 4) be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

 Option 1) Molality Option 2) Weight fraction of solute Option 3) Fraction of solute present in water Option 4) Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

 Option 1) twice that in 60 g carbon Option 2) 6.023 × 1022 Option 3) half that in 8 g He Option 4) 558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

 Option 1) less than 3 Option 2) more than 3 but less than 6 Option 3) more than 6 but less than 9 Option 4) more than 9
Bio Medical Engineer

The field of biomedical engineering opens up a universe of expert chances. An Individual in the biomedical engineering career path work in the field of engineering as well as medicine, in order to find out solutions to common problems of the two fields. The biomedical engineering job opportunities are to collaborate with doctors and researchers to develop medical systems, equipment, or devices that can solve clinical problems. Here we will be discussing jobs after biomedical engineering, how to get a job in biomedical engineering, biomedical engineering scope, and salary.

4 Jobs Available

Database professionals use software to store and organise data such as financial information, and customer shipping records. Individuals who opt for a career as data administrators ensure that data is available for users and secured from unauthorised sales. DB administrators may work in various types of industries. It may involve computer systems design, service firms, insurance companies, banks and hospitals.

4 Jobs Available
GIS Expert

GIS officer work on various GIS software to conduct a study and gather spatial and non-spatial information. GIS experts update the GIS data and maintain it. The databases include aerial or satellite imagery, latitudinal and longitudinal coordinates, and manually digitized images of maps. In a career as GIS expert, one is responsible for creating online and mobile maps.

3 Jobs Available
Database Architect

If you are intrigued by the programming world and are interested in developing communications networks then a career as database architect may be a good option for you. Data architect roles and responsibilities include building design models for data communication networks. Wide Area Networks (WANs), local area networks (LANs), and intranets are included in the database networks. It is expected that database architects will have in-depth knowledge of a company's business to develop a network to fulfil the requirements of the organisation. Stay tuned as we look at the larger picture and give you more information on what is db architecture, why you should pursue database architecture, what to expect from such a degree and what your job opportunities will be after graduation. Here, we will be discussing how to become a data architect. Students can visit NIT Trichy, IIT Kharagpur, JMI New Delhi

3 Jobs Available
Ethical Hacker

A career as ethical hacker involves various challenges and provides lucrative opportunities in the digital era where every giant business and startup owns its cyberspace on the world wide web. Individuals in the ethical hacker career path try to find the vulnerabilities in the cyber system to get its authority. If he or she succeeds in it then he or she gets its illegal authority. Individuals in the ethical hacker career path then steal information or delete the file that could affect the business, functioning, or services of the organization.

3 Jobs Available
Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

3 Jobs Available
Geothermal Engineer

Individuals who opt for a career as geothermal engineers are the professionals involved in the processing of geothermal energy. The responsibilities of geothermal engineers may vary depending on the workplace location. Those who work in fields design facilities to process and distribute geothermal energy. They oversee the functioning of machinery used in the field.

3 Jobs Available
Geotechnical engineer

The role of geotechnical engineer starts with reviewing the projects needed to define the required material properties. The work responsibilities are followed by a site investigation of rock, soil, fault distribution and bedrock properties on and below an area of interest. The investigation is aimed to improve the ground engineering design and determine their engineering properties that include how they will interact with, on or in a proposed construction.

The role of geotechnical engineer in mining includes designing and determining the type of foundations, earthworks, and or pavement subgrades required for the intended man-made structures to be made. Geotechnical engineering jobs are involved in earthen and concrete dam construction projects, working under a range of normal and extreme loading conditions.

3 Jobs Available
Finance Executive

A career as a Finance Executive requires one to be responsible for monitoring an organisation's income, investments and expenses to create and evaluate financial reports. His or her role involves performing audits, invoices, and budget preparations. He or she manages accounting activities, bank reconciliations, and payable and receivable accounts.

3 Jobs Available
Investment Banker

An Investment Banking career involves the invention and generation of capital for other organizations, governments, and other entities. Individuals who opt for a career as Investment Bankers are the head of a team dedicated to raising capital by issuing bonds. Investment bankers are termed as the experts who have their fingers on the pulse of the current financial and investing climate. Students can pursue various Investment Banker courses, such as Banking and Insurance, and Economics to opt for an Investment Banking career path.

3 Jobs Available
Bank Branch Manager

Bank Branch Managers work in a specific section of banking related to the invention and generation of capital for other organisations, governments, and other entities. Bank Branch Managers work for the organisations and underwrite new debts and equity securities for all type of companies, aid in the sale of securities, as well as help to facilitate mergers and acquisitions, reorganisations, and broker trades for both institutions and private investors.

3 Jobs Available
Treasurer

Treasury analyst career path is often regarded as certified treasury specialist in some business situations, is a finance expert who specifically manages a company or organisation's long-term and short-term financial targets. Treasurer synonym could be a financial officer, which is one of the reputed positions in the corporate world. In a large company, the corporate treasury jobs hold power over the financial decision-making of the total investment and development strategy of the organisation.

3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.

3 Jobs Available
Underwriter

An underwriter is a person who assesses and evaluates the risk of insurance in his or her field like mortgage, loan, health policy, investment, and so on and so forth. The underwriter career path does involve risks as analysing the risks means finding out if there is a way for the insurance underwriter jobs to recover the money from its clients. If the risk turns out to be too much for the company then in the future it is an underwriter who will be held accountable for it. Therefore, one must carry out his or her job with a lot of attention and diligence.

3 Jobs Available
Bank Probationary Officer (PO)

A career as Bank Probationary Officer (PO) is seen as a promising career opportunity and a white-collar career. Each year aspirants take the Bank PO exam. This career provides plenty of career development and opportunities for a successful banking future. If you have more questions about a career as  Bank Probationary Officer (PO), what is probationary officer or how to become a Bank Probationary Officer (PO) then you can read the article and clear all your doubts.

3 Jobs Available
Operations Manager

Individuals in the operations manager jobs are responsible for ensuring the efficiency of each department to acquire its optimal goal. They plan the use of resources and distribution of materials. The operations manager's job description includes managing budgets, negotiating contracts, and performing administrative tasks.

3 Jobs Available
Transportation Planner

A career as Transportation Planner requires technical application of science and technology in engineering, particularly the concepts, equipment and technologies involved in the production of products and services. In fields like land use, infrastructure review, ecological standards and street design, he or she considers issues of health, environment and performance. A Transportation Planner assigns resources for implementing and designing programmes. He or she is responsible for assessing needs, preparing plans and forecasts and compliance with regulations.

3 Jobs Available
Conservation Architect

A Conservation Architect is a professional responsible for conserving and restoring buildings or monuments having a historic value. He or she applies techniques to document and stabilise the object’s state without any further damage. A Conservation Architect restores the monuments and heritage buildings to bring them back to their original state.

2 Jobs Available
Safety Manager

A Safety Manager is a professional responsible for employee’s safety at work. He or she plans, implements and oversees the company’s employee safety. A Safety Manager ensures compliance and adherence to Occupational Health and Safety (OHS) guidelines.

2 Jobs Available

A Team Leader is a professional responsible for guiding, monitoring and leading the entire group. He or she is responsible for motivating team members by providing a pleasant work environment to them and inspiring positive communication. A Team Leader contributes to the achievement of the organisation’s goals. He or she improves the confidence, product knowledge and communication skills of the team members and empowers them.

2 Jobs Available
Structural Engineer

A Structural Engineer designs buildings, bridges, and other related structures. He or she analyzes the structures and makes sure the structures are strong enough to be used by the people. A career as a Structural Engineer requires working in the construction process. It comes under the civil engineering discipline. A Structure Engineer creates structural models with the help of computer-aided design software.

2 Jobs Available
Architect

Individuals in the architecture career are the building designers who plan the whole construction keeping the safety and requirements of the people. Individuals in architect career in India provides professional services for new constructions, alterations, renovations and several other activities. Individuals in architectural careers in India visit site locations to visualize their projects and prepare scaled drawings to submit to a client or employer as a design. Individuals in architecture careers also estimate build costs, materials needed, and the projected time frame to complete a build.

2 Jobs Available
Landscape Architect

Having a landscape architecture career, you are involved in site analysis, site inventory, land planning, planting design, grading, stormwater management, suitable design, and construction specification. Frederick Law Olmsted, the designer of Central Park in New York introduced the title “landscape architect”. The Australian Institute of Landscape Architects (AILA) proclaims that "Landscape Architects research, plan, design and advise on the stewardship, conservation and sustainability of development of the environment and spaces, both within and beyond the built environment". Therefore, individuals who opt for a career as a landscape architect are those who are educated and experienced in landscape architecture. Students need to pursue various landscape architecture degrees, such as M.Des, M.Plan to become landscape architects. If you have more questions regarding a career as a landscape architect or how to become a landscape architect then you can read the article to get your doubts cleared.

2 Jobs Available
Plumber

An expert in plumbing is aware of building regulations and safety standards and works to make sure these standards are upheld. Testing pipes for leakage using air pressure and other gauges, and also the ability to construct new pipe systems by cutting, fitting, measuring and threading pipes are some of the other more involved aspects of plumbing. Individuals in the plumber career path are self-employed or work for a small business employing less than ten people, though some might find working for larger entities or the government more desirable.

2 Jobs Available
Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

6 Jobs Available
Pathologist

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

5 Jobs Available
Veterinary Doctor

A veterinary doctor is a medical professional with a degree in veterinary science. The veterinary science qualification is the minimum requirement to become a veterinary doctor. There are numerous veterinary science courses offered by various institutes. He or she is employed at zoos to ensure they are provided with good health facilities and medical care to improve their life expectancy.

5 Jobs Available
Gynaecologist

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth.

4 Jobs Available
Oncologist

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

3 Jobs Available
Surgical Technologist

When it comes to an operation theatre, there are several tasks that are to be carried out before as well as after the operation or surgery has taken place. Such tasks are not possible without surgical tech and surgical tech tools. A single surgeon cannot do it all alone. It’s like for a footballer he needs his team’s support to score a goal the same goes for a surgeon. It is here, when a surgical technologist comes into the picture. It is the job of a surgical technologist to prepare the operation theatre with all the required equipment before the surgery. Not only that, once an operation is done it is the job of the surgical technologist to clean all the equipment. One has to fulfil the minimum requirements of surgical tech qualifications.

3 Jobs Available
Critical Care Specialist

A career as Critical Care Specialist is responsible for providing the best possible prompt medical care to patients. He or she writes progress notes of patients in records. A Critical Care Specialist also liaises with admitting consultants and proceeds with the follow-up treatments.

2 Jobs Available
Ophthalmologist

Individuals in the ophthalmologist career in India are trained medically to care for all eye problems and conditions. Some optometric physicians further specialize in a particular area of the eye and are known as sub-specialists who are responsible for taking care of each and every aspect of a patient's eye problem. An ophthalmologist's job description includes performing a variety of tasks such as diagnosing the problem, prescribing medicines, performing eye surgery, recommending eyeglasses, or looking after post-surgery treatment.

2 Jobs Available
Actor

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs.

4 Jobs Available

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

3 Jobs Available
Acrobat

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

3 Jobs Available
Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages. Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

3 Jobs Available
Talent Agent

The career as a Talent Agent is filled with responsibilities. A Talent Agent is someone who is involved in the pre-production process of the film. It is a very busy job for a Talent Agent but as and when an individual gains experience and progresses in the career he or she can have people assisting him or her in work. Depending on one’s responsibilities, number of clients and experience he or she may also have to lead a team and work with juniors under him or her in a talent agency. In order to know more about the job of a talent agent continue reading the article.

If you want to know more about talent agent meaning, how to become a Talent Agent, or Talent Agent job description then continue reading this article.

3 Jobs Available
Videographer

Careers in videography are art that can be defined as a creative and interpretive process that culminates in the authorship of an original work of art rather than a simple recording of a simple event. It would be wrong to portrait it as a subcategory of photography, rather photography is one of the crafts used in videographer jobs in addition to technical skills like organization, management, interpretation, and image-manipulation techniques. Students pursue Visual Media, Film, Television, Digital Video Production to opt for a videographer career path. The visual impacts of a film are driven by the creative decisions taken in videography jobs. Individuals who opt for a career as a videographer are involved in the entire lifecycle of a film and production.

2 Jobs Available
Multimedia Specialist

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications.

2 Jobs Available
Visual Communication Designer

Individuals who want to opt for a career as a Visual Communication Designer will work in the graphic design and arts industry. Every sector in the modern age is using visuals to connect with people, clients, or customers. This career involves art and technology and candidates who want to pursue their career as visual communication designer has a great scope of career opportunity.

2 Jobs Available
Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism, Advertising, Marketing Management. Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook.

5 Jobs Available
Journalist

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

3 Jobs Available
Publisher

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

3 Jobs Available
Vlogger

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion. Ever since internet cost got reduced the viewership for these types of content has increased on a large scale. Therefore, the career as vlogger has a lot to offer. If you want to know more about the career as vlogger, how to become a vlogger, so on and so forth then continue reading the article. Students can visit Jamia Millia Islamia, Asian College of Journalism, Indian Institute of Mass Communication to pursue journalism degrees.

3 Jobs Available
Editor

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

3 Jobs Available

Advertising managers consult with the financial department to plan a marketing strategy schedule and cost estimates. We often see advertisements that attract us a lot, not every advertisement is just to promote a business but some of them provide a social message as well. There was an advertisement for a washing machine brand that implies a story that even a man can do household activities. And of course, how could we even forget those jingles which we often sing while working?

2 Jobs Available
Photographer

Photography is considered both a science and an art, an artistic means of expression in which the camera replaces the pen. In a career as a photographer, an individual is hired to capture the moments of public and private events, such as press conferences or weddings, or may also work inside a studio, where people go to get their picture clicked. Photography is divided into many streams each generating numerous career opportunities in photography. With the boom in advertising, media, and the fashion industry, photography has emerged as a lucrative and thrilling career option for many Indian youths.

2 Jobs Available
Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

2 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.

3 Jobs Available
Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product.

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

3 Jobs Available
Production Manager

Production Manager Job Description: A Production Manager is responsible for ensuring smooth running of manufacturing processes in an efficient manner. He or she plans and organises production schedules. The role of Production Manager involves estimation, negotiation on budget and timescales with the clients and managers.

3 Jobs Available

A Team Leader is a professional responsible for guiding, monitoring and leading the entire group. He or she is responsible for motivating team members by providing a pleasant work environment to them and inspiring positive communication. A Team Leader contributes to the achievement of the organisation’s goals. He or she improves the confidence, product knowledge and communication skills of the team members and empowers them.

2 Jobs Available
Quality Systems Manager

A Quality Systems Manager is a professional responsible for developing strategies, processes, policies, standards and systems concerning the company as well as operations of its supply chain. It includes auditing to ensure compliance. It could also be carried out by a third party.

2 Jobs Available
Merchandiser

A career as a merchandiser requires one to promote specific products and services of one or different brands, to increase the in-house sales of the store. Merchandising job focuses on enticing the customers to enter the store and hence increasing their chances of buying a product. Although the buyer is the one who selects the lines, it all depends on the merchandiser on how much money a buyer will spend, how many lines will be purchased, and what will be the quantity of those lines. In a career as merchandiser, one is required to closely work with the display staff in order to decide in what way a product would be displayed so that sales can be maximised. In small brands or local retail stores, a merchandiser is responsible for both merchandising and buying.

2 Jobs Available
Procurement Manager

The procurement Manager is also known as  Purchasing Manager. The role of the Procurement Manager is to source products and services for a company. A Procurement Manager is involved in developing a purchasing strategy, including the company's budget and the supplies as well as the vendors who can provide goods and services to the company. His or her ultimate goal is to bring the right products or services at the right time with cost-effectiveness.

2 Jobs Available
Production Planner

Individuals who opt for a career as a production planner are professionals who are responsible for ensuring goods manufactured by the employing company are cost-effective and meets quality specifications including ensuring the availability of ready to distribute stock in a timely fashion manner.

2 Jobs Available
Information Security Manager

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack

3 Jobs Available
Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

3 Jobs Available
Product Manager

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.

3 Jobs Available
ITSM Manager

ITSM Manager is a professional responsible for heading the ITSM (Information Technology Service Management) or (Information Technology Infrastructure Library) processes. He or she ensures that operation management provides appropriate resource levels for problem resolutions. The ITSM Manager oversees the level of prioritisation for the problems, critical incidents, planned as well as proactive tasks.

3 Jobs Available
.NET Developer

.NET Developer Job Description: A .NET Developer is a professional responsible for producing code using .NET languages. He or she is a software developer who uses the .NET technologies platform to create various applications. Dot NET Developer job comes with the responsibility of  creating, designing and developing applications using .NET languages such as VB and C#.

2 Jobs Available
Corporate Executive

Are you searching for a Corporate Executive job description? A Corporate Executive role comes with administrative duties. He or she provides support to the leadership of the organisation. A Corporate Executive fulfils the business purpose and ensures its financial stability. In this article, we are going to discuss how to become corporate executive.

2 Jobs Available
DevOps Architect

A DevOps Architect is responsible for defining a systematic solution that fits the best across technical, operational and and management standards. He or she generates an organised solution by examining a large system environment and selects appropriate application frameworks in order to deal with the system’s difficulties.

2 Jobs Available
Cloud Solution Architect

Individuals who are interested in working as a Cloud Administration should have the necessary technical skills to handle various tasks related to computing. These include the design and implementation of cloud computing services, as well as the maintenance of their own. Aside from being able to program multiple programming languages, such as Ruby, Python, and Java, individuals also need a degree in computer science.

2 Jobs Available