Factorize :4p2 – 25q2

Given 4p2 – 25q2= (2p)2 – (5q)2Comparing with a2 – b2 = (a + b) (a – b)a = 2p and b = 5qSo, 4p2 – 25q2 = (2p + 5q)(2p – 5q)

Q4 of 157 Page 30

Factorize :
4p² – 25q²

Given 4p² – 25q²= (2p)² – (5q)²

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

a = 2p and b = 5q

So, 4p² – 25q² = (2p + 5q)(2p – 5q)

Factorize :

a² + 14a + 49

Factorize :

x² – 12x + 36

Factorize :

25x² – 20xy + 4y²

Factorize :

169m² – 625n²

Questions · 157

1. Algebra

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