Evaluate : (4a +3b)^2- (4a - 3b)^2+ 48ab. - Vidyadip

Question

Evaluate : $(4a +3b)^2- (4a - 3b)^2+ 48ab.$

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Answer

By using for this formula $=x^2-y^2=(x+y)(x-y)$
$=(4 a+3 b+4 a-3 b)(4 a+3 b-4 a+3 b)+48 a b$
$=(8 a)(6 b)+48 a b$
$=48 a b+48 a b$
$=96 a b$

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