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Math Help - Finding all the zeros of a polynomial function

  1. #1
    Senior Member vaironxxrd's Avatar
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    Finding all the zeros of a polynomial function

    I have to find the zeros of a polynomial function, and even though this topic was explained in class, I din't understand it very well and did not ask for help.

    I would like to check my work and get suggestions if possible.

    Problem: f(x) = x^4 - x^3 - x^2 -x -2

    My solution:
    f(x) = (x+1)(x-2)(x+1i)(x-1i)

    Is this correct?
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  2. #2
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    Re: Finding all the zeros of a polynomial function

    Yes. x = 2, -1, i, -i
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