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Math Help - Complete the Square??

  1. #1
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    Question Complete the Square??

    Hello,
    Can someone please explain to me how to solve this problem.

    Complete the square x^2-8x

    I keep looking over the explanation in my book and i just doesn't make sense to me.

    Thanks
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  2. #2
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    x^2 - 8x = (x^2 - 8x + 16 )- 16 = (x-4)^2 - 16
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