Q. 4 D5.0( 1 Vote )

Factorize :

25x2 – 20xy + 4y2

Answer :

Given 25x2 – 20xy + 4y2 = (5x)2 – 2× 5x ×2y x + (2y)2


Comparing with (a– b)2 = a2 + b2 – 2a×b


a = 5x and b = 2y


So, 25x2 – 20xy + 4y2 = (5x – 2y)(5x – 2y)


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