solve x^2-7x-1100=0.....?

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  • SS4
    Lv 7
    10 years ago
    Best Answer

    x = 1/2 (7-sqrt(4449))

    x = 1/2 (7+sqrt(4449))

    Just use the quadratic formula ^_^

  • 10 years ago

    using the quadratic formula

    (-b +/- sqrt (b^2-4ac)) / 2a

    a=1

    b=7

    c=0

    (-(-7) +/- sqrt (-7^2-4*1*0)) / 2*1

    (7 +/- sqrt (49-0)) / 2

    (7 +/- 7) / 2

    (7+7) / 2 = 7

    (7-7) / 2= 0

    x= 7, 0

    or you can factor

    x^2-7x=0

    x (x-7)=0

    separate the equation to get

    x=0 and x-7=0

    x=0 and x=7

    so x= 7, 0

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