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4 August, 01:49

X squared + 12 x + 3 = 7 solve by completing the square

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  1. 4 August, 01:58
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    ax^2 + bx + c

    x^2 + 12x + 3 = 7

    x^2 + 12x = 4

    Take b, half it, then square it--

    x^2 + 12x + 36 = 40

    That equation becomes

    (x+6) ^2 = 40

    + 6 = ± (square root of 40)

    = 0.324555

    = - 12.3246
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