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Question

The perimeter of a rectangle is 8a210ab+6b2 and one of its side is 6a215ab+2b2 . Find its other adjacent side.

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Solution

Perimeter=2(x+y)
where,
x=one side
y=other side
So,
8a210ab+6b2=2(6a215ab+2b2+y)
8a210ab+6b2=12a230ab+4b2+2y
8a210ab+6b212a2+30ab4b2=2y
2y=4a2+20ab+2b2
y=4a2+20ab+2b22
y=2a2+10ab+b2

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