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Math Help - [SOLVED] One more geometric argument.

  1. #1
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    [SOLVED] One more geometric argument.

    Develop a geometric argument to solve a square is equal to things and numbers, that is, an equation of the form x^2 = bx + c.

    I need to geometrically justify the quadratic formula that solves x^2-bx=c, which gives x=sqrt((b/2)^2+c))+(b/2). The textbook describes the procedure when it is x^2+bx=c as adding a multiple of a side to an area with the multiple being a rectangle of length x and width b, a rectangle that is added to a square of side x. They then describe it as cutting half the rectangle off from one side of the square and putting it on the bottom and adding a square of side b/2 to complete the square. So then x's length is described by the formula.

    It then says; however, that when it is x^2-bx=c, it is more complicated and not alike. Please help. Thanks.
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  2. #2
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    nevermind, I got it
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