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12 December, 19:28

The width of a rectangle is 15 units less than the length. if the area is 76 square units, then find the dimensions of the rectangle

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  1. 12 December, 21:15
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    W = L - 15

    WL = 76

    (L-15) L = 76

    L^2 - 15L - 76 = 0

    (L-19) (L+4) = 0

    L = 19 or - 4

    Since a length cannot be negative, the length must be 19 units.

    The width is 19-15=4 units.
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