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13 March, 23:35

Solve 2x2 + 8x - 12 = 0 by completing the square. Show step-by-step solution

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  1. 14 March, 01:06
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    Factor out 2 x^2 + 4x - 6 = 0

    Take half middle coefficient and square it:

    x^2 + 4x + 4 - 6 = 4 (x+2) ^2

    = 10 x+2

    = sqrt (10) x

    = + - sqrt (10) - 2
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