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18 July, 14:17

What equation results from completing of the square and then factoring? X^2+4x=5

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  1. 18 July, 16:16
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    (x-1) (x+5) = 0

    x=1; x=-5

    Step-by-step explanation:

    x²+4x=5

    x²+4x+2²=5+2²

    (x+2) ²=3²

    (x+2) ²-3²=0

    (x+2-3) (x+2+3) = 0

    (x-1) (x+5) = 0

    (x-1) = 0; x=1

    (x+5) = 0; x = - 5
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