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Math Help - quadratic area word problem

  1. #1
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    quadratic area word problem

    A rectangle has a length 2 meters less than twice its width. When 5 meters is added to the width, the result is a square with an area of 144 square meters. Find the dimensions of the original rectangle.

    (w+5)*(2w-2)=144?
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  2. #2
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    original width : w
    original length : 2w-2
    New width: w+5
    New area = 144

    So (w+5)(2w-2)=144
    Last edited by acc100jt; November 22nd 2009 at 11:17 PM.
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  3. #3
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    Quote Originally Posted by acc100jt View Post
    original width : w
    original length : w-2
    New width: w+5
    New area = 144

    [Note that the length is not changed]

    So (w+5)(w-2)=144
    Wouldnt it be (w+5)(2w-2)=144?
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  4. #4
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    LOL, my bad, i didn't see the "twice"

    (w+5)(2w-2)=144 is correct
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