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20 September, 10:45

What equation results from completing the square and then factoring x2+4x=12

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  1. 20 September, 11:10
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    x^2 + 4x = 12

    add 4 to each side (4/2) ^2

    x^2 + 4x + 4 = 12 + 4

    (x+2) ^2 = 16

    take the square root of each side (gives a positive and negative answer)

    x+2 = 4 x+2 = - 4

    x=2 x=-6
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