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Question

Simplification of (6x2y)2 gives .

A
36x2+4y2+24xy
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B
36x2+4y212xy
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C
18x2+4y224xy
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D
36x2+4y224xy
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Solution

The correct option is D 36x2+4y224xy
Given: (6x2y)2
Using the identity:
(ab)2=a2+b22ab
(6x2y)2=(6x)2+(2y)22×6x×2y
(6x2y)2=36x2+4y224xy

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