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: