- 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

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Class 8 Maths Class 8 Science