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Question

Question 84 (ii)

Simplify

(3x+2y)2(3x2y)2

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Solution

We have,
(3x+2y)2(3x2y)2
=[(3x+2y)+(3x2y)][(3x+2y)(3x2y)] [using the identity, a2b2=(a+b)(ab)]
=(3x+2y+3x2y)(3x+2y3x+2y)=6x×4y=(6×4)×xy=24xy


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