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11 October, 00:04

The area of a rectangle is 56 cm. The length is 2 cm more than x and the width is 5 cm less than twice x. Solve for x. Round to the nearest whole number.

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  1. 11 October, 00:31
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    (2 + x) x (2x-5) = 56

    (2+x) (2x-5) = 56

    2x² - x - 10 = 56

    +10 + 10

    2x² - x = 66

    2x² - x - 66 = 0

    x = 6

    2 (6) ² - (6) = 66

    2 (36) - 6 = 66

    72 - 6 = 66

    66 = 66
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