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Math Help - algebraic expression

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    algebraic expression

    the length of a rectangle is (2x-5) and its width is (x+7). Write an algebraic expression showing the amount of fencing needed to enclose the rectangle.
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    Quote Originally Posted by blame_canada100 View Post
    the length of a rectangle is (2x-5) and its width is (x+7). Write an algebraic expression showing the amount of fencing needed to enclose the rectangle.
    You want the perimeter of the rectangle. Given a length l and a width w this is
    P = 2l + 2w

    You take it from here.

    -Dan
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