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16 April, 03:32

A rectangle backyard has length (3a+2b) m and breadth (3a-2b+c) m. 1) find the area of backyard. 2) If a=4, b=2, c=3, then find area of backyard

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  1. 16 April, 06:28
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    length = (3a+2b) m

    breadth = (3a-2b+c) m

    Area=length*breadth

    Area = (3a+2b) * (3a-2b+c)

    3a (3a-2b+c) + 2b (3a-2b+c)

    9a2-6ab+3ac+6ab-4b2+2bc

    9a2+3ac-4b2+2bc
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