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25 September, 23:39

For what values of x does - x2 + 7x + 5 = 0

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  1. 26 September, 03:30
    0
    Step-by-step explanation:

    To find the value of x in - x^2+7x+5=0

    Multiply through by - 1

    x^2-7x-5=0

    Usinng formulate method

    We get

    -b+or-√b^2-4ac over 2a

    7 + or - √-7^2-4*1*-5 over 2*1

    7 + or - √49+20/2

    7+or - √69/2

    7+8.3/2 or 7-8.3/2

    7.7 or - 0.65
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