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26 June, 08:09

The area of a rectangle is 52 in². The length of the rectangle is 9 in. longer than the width.

What is the width of the rectangle?

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  1. 26 June, 08:16
    0
    A = LW

    A = 52

    L = W + 9

    52 = W (W + 9)

    52 = W^2 + 9W

    W^2 + 9W - 52 = 0

    (W - 4) (W + 13) = 0

    W - 4 = 0

    W = 4 < = = = its this one ... the width is 4 in

    W + 13 = 0

    W = - 13 ... extraneous solution
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