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8 October, 22:49

The length of a rectangle is 3 centimeters less than its width. What are the dimensions of the rectangle if its area is 130 square centimeters?

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  1. 8 October, 23:10
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    a = lw

    130 = l * (l+3)

    130 = l^2 + 3l

    l^2 + 3l - 130 = 0

    (l + 13) * (l - 10) = 0

    l = - 13, l = 10

    length can't be negative, so length is 10cm, height is 13cm
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