- What is algebraic expression
- |
- Terms, Factors and Coefficients
- |
- Monomials, Binomials, trinomial and Polynomials
- |
- Like and Unlike Terms
- |
- Addition and Subtraction of Algebraic Expressions
- |
- Multiplication of Algebraic expression
- |
- What is an Identity

In this page we have *Algebraic Expressions and Identities:NCERT Solutions for Class 8 Maths Chapter 9 * for
Exercise 9.3 . Hope you like them and do not forget to like , social share
and comment at the end of the page.

Carry out the multiplication of the expressions in each of the following pairs.

(i) 4p, q + r

(ii) ab, a – b

(iii) a + b, 7a²b²

(iv) a

(v) pq + qr + rp, 0

- 4p(q + r) = 4pq + 4pr
- ab(a - b) = a
^{2}b - ab^{2} - (a + b) (7a
^{2}b^{2}) = 7a^{3}b^{2}+ 7a^{2}b^{3} - (a
^{2}- 9)(4a) = 4a^{3}- 36a^{2} - (pq + qr + rp) x 0 = 0

Find the product.

i) a

ii) (2xy/3) ×(-9x

(iii) (-10pq

(iv) ( x) x (x

i) As you know

So, we get

=

(a) Simplify 3x (4x – 5) + 3 and find its values for (i) x = 3 (ii) x =1/2

(b) Simplify

i) Putting x=3 in the equation we get

12x

(ii) putting x=1/2 in the equation we get

a(a

=a

(i) putting a= 0 in the equation we get

0

(ii) putting a=1 in the equation we get

1

(iii) Putting a = -1 in the equation we get

-1

(a) Add:

(b) Add:

(c) Subtract:

(d) Subtract:

= p

ii) (2xz - 2x

= 2xz - 4xy + 2yz - 2x

iii) (40ln - 12lm + 8l

= 40ln - 12lm + 8l

= 55ln - 24lm + 5l

iv) = (-4ac + 4bc + 4c

= -4ac + 4bc + 4c

= -7ac + 4bc + 4c

Download Class 8 Maths Exercise 9.3 as pdf

Class 8 Maths Class 8 Science

Given below are the links of some of the reference books for class 8 Math.

- Mathematics Foundation Course for JEE/Olympiad : Class 8 This book can take students maths skills further. Only buy if child is interested in Olympiad/JEE foundation courses.
- Mathematics for Class 8 by R S Aggarwal Detailed Mathematics book to clear basics and concepts. I would say it is a must have book for class 8 student.
- Pearson Foundation Series (IIT -JEE / NEET) Physics, Chemistry, Maths & Biology for Class 8 (Main Books) | PCMB Combo : These set of books could help your child if he aims to get extra knowledge of science and maths. These would be helpful if child wants to prepare for competitive exams like JEE/NEET. Only buy if you can provide help to the child while studying.
- Reasoning Olympiad Workbook - Class 8 :- Reasoning helps sharpen the mind of child. I would recommend students practicing reasoning even though they are not appearing for Olympiad.

You can use above books for extra knowledge and practicing different questions.

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