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Math Help - Can anyone help me solve this cubic?

  1. #1
    Chriss
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    Can anyone help me solve this cubic?

    Hi folks,

    Can anyone help me solve this?
    z^3 - Z^2 + (x)Z - y = 0

    Solve for Z where x and y are constants. Im completely stuckand can't get my head round this one.

    Cheers!!

    Chris
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Chriss View Post
    Hi folks,

    Can anyone help me solve this?
    z^3 - Z^2 + (x)Z - y = 0

    Solve for Z where x and y are constants. Im completely stuckand can't get my head round this one.

    Cheers!!

    Chris
    If x and y are arbitrary constants then you are stuck with something like Cardano's method. I shudder to think of applying it here.

    -Dan
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