New Learning Composite Mathematics Class 8 SK Gupta Anubhuti Gangal Factorisation of Algebraic Expressions Chapter 6A Solution

New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Factorisation of Algebraic Expressions Self Practice 6A Solution

(1) Complete the factorisation.

(a) 4x + 8y = 4(___)

(b) 9m – 3 = 3(____)

(c) 5b2 – 20b = 5b (____)

(d) -3ax + 6ay = -3a (___)

(e) 3x2y2 – xy2 = xy2(___)

(f) 14a3b – 7a2b2 = 7a2b(___)

(g) –xy – 3x = -x (___)

(h) 8x3 – 28x2– 4x = 4x(___)

(2) One factor is given for each polynomial. Write the other factor.

(a) 7x + 28 = (___) (x + 4)

(b) 15y – 3 = (____) (5y – 1)

(c) 600x – x2 = (___) (600 –x)

(d) – 3x – 27 = (___) (x + 9)

(e) 50x5 – 25x4 + 100x3 = 25x3 (____)

(f) -3y2 – 9y3 = (___) (1 + 3y)

(3) Factorise the following completely.

(a) ax2 + ay

(b) 4a2 – 2a2c

(c) 28p3 – 42p2q

(d) -15p2 – 20pr

(e) –m2n – mn2

(f) 48y5z3 – 64y4z4

(g) 21y3 – 14y2 – 7y

(h) 16x3y2 – 20x2y3 – 28x2y2z

SOLUTION Number 1, 2 & 3:


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