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18 December, 23:54

Sole the equation 2x (2x-1) = x to the power of two plus 3x+2

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  1. 19 December, 02:59
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    2x (2x - 1) = x^2 + 3x + 2

    4x^2 - 2x = x^2 + 3x + 2

    4x^2 - x^2 - 2x - 3x - 2 = 0

    3x^2 - 5x - 2 = 0

    (3x + 1) (x - 2) = 0

    3x + 1 = 0

    3x = - 1

    x = - 1/3

    x - 2 = 0

    x = 2

    so x = - 1/3 or x = 2
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