Factorize :36 – 49x2

Given 36 – 49x2= (6)2 – (7x)2Comparing with a2 – b2 = (a + b) (a – b)a = 6 and b = 7xSo, 36 – 49x2= (6 + 7x)(6 – 7x)

Q4 of 157 Page 30

Factorize :
36 – 49x²

Given 36 – 49x²= (6)² – (7x)²

Comparing with a² – b² = (a + b) (a – b)

a = 6 and b = 7x

So, 36 – 49x²= (6 + 7x)(6 – 7x)

Factorize :

121a² + 154ab + 49b²

Factorize :

3x³ – 75x

Factorize :

1 – 6x + 9x²

Factorize :

x² + 7x + 12

Questions · 157

1. Algebra

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