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7 August, 23:57

The area of a square is 4x2 + 20xy + 25y2. Find the perimeter.

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  1. 8 August, 02:45
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    Step-by-step explanation:

    1) The area of a square is 4x^2 + 20xy + 25y^2 =

    4x^2+10xy+10xy+25y^2=2x (2x+5y) + 5y (2x+5y) = (2x+5y) (2x+5y) = (2x+5y) ^2

    2) Perimeter of square = 4a (a is a side of square)

    P = 4 (2x+5y) = 8x+20y
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