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18 December, 08:58

The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. Find the width and length.

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  1. 18 December, 09:17
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    Let the width = x

    =>length = 2x-1

    91 = x (2x-1) = 2x^2-x

    2x^2-x-91=0

    = (2x+13) (x-7)

    => x=-13/2=> no

    =>x = 7 cm
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