Q. 4 G5.0( 1 Vote )

Factorize :

121a2 + 154ab + 49b2

Answer :

Given 121a2 + 154ab + 49b2 = (11a)2 + 2× (11a)× (7b) + (7b)2


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


a = 11a and b = 7b


So, 121a2 + 154ab + 49b2 = (11a + 7b)(11a + 7b)


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