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16 March, 20:25

The length of a rectangular field is 20 less than its width. The area of the field is 12,00 square feet. What is the width of the field?

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  1. 16 March, 20:28
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    X (x-20) = 12000

    x^2 - 20x = 12000

    x^2 - 20x - 12000 = 0

    (x - 120) (x + 100) = 0

    x = - 100, 120

    so the width is 120 ft
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