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12 August, 10:33

What are the roots of x in - 10x2 + 12x - 9 = 0

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  1. 12 August, 13:55
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    A = - 10 b = 12 c = - 9

    x = [-12 + - sq root (144 - 4*-10*-9) ] / - 20

    x = [-12 + - sq root (144 - 360) ] / - 20

    x1 = 3/5 + (14.7 i / - 20)

    x2 = 3/5 - (14.7 i / - 20)
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