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18 September, 23:40

Solve for x by completing the square. 2x^2-4x+7=0

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  1. 19 September, 02:54
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    2x^2 - 4x + 7 = 0

    x^2 - 2x + 3.5 = 0

    x^2 - 2x = - 3.5

    x^2 - 2x + 1 = 1 - 3.5

    (x - 1) ^2 = - 2.5

    No solution because a quadratic term can't be negative.
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