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18 August, 14:05

X^2+6x-40=0 complete the square

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  1. 18 August, 17:07
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    x = {4, - 10}

    Step-by-step explanation:

    x^2+6x-40=0

    x^2+6x+9 = 40+9

    (x+3) ^2 = 49

    x+3 = 7

    x+3 = - 7

    x = {4, - 10}
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