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4 December, 21:50

The length of a rectangular carpet is 4 feet greater than twice its width. If the area is 48 square feet, find the carpet's length and width.

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  1. 5 December, 00:02
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    l = 2w + 4

    l * w = 48

    We can substitute l with its value:

    2w + 4 * w = 48

    2w^2 + 4w - 48 = 0

    2 (w^2 + 2w - 24) = 0

    2 (w+6) (w-4) = 0

    w = {4, - 6}
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