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Math Help - how to solve this cubic equation...

  1. #1
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    how to solve this cubic equation...

    x^3-x^2+(a-b-b^2)x-ab=0

    please guys I need to solve this equation step by step. Thanks
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  2. #2
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    are you solving for the variables or are you trying to factor or simplify?
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  3. #3
    MHF Contributor red_dog's Avatar
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    Isn't it x^3-x^2+(a+b-b^2)x-ab=0?
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  4. #4
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    How to solev this Cubic Equation

    I need to solve this equation step by step by variable x.

    x^3-x^2+(A-B-B^2)*x-A*B=0

    You can find this equation on:

    https://www.e-education.psu.edu/png520/m10_p5.html
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  5. #5
    Grand Panjandrum
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    Quote Originally Posted by chemtoli View Post
    I need to solve this equation step by step by variable x.

    x^3-x^2+(A-B-B^2)*x-A*B=0

    You can find this equation on:

    https://www.e-education.psu.edu/png520/m10_p5.html
    By inspection x=-B is a root, and then factorisation and the quadratic formula will give the other roots.

    CB
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