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Math Help - Test today! Help!!

  1. #1
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    Post Test today! Help!!

    Information is given about a complex polynomial f(x) whose coefficients are real numbers. Find the remaining zeros for f.
    Degree 3; zeros 2, 3 - i

    A. -3 + i

    B. none

    C. -2

    D. 3 + i

    E. None of the above

    how do you get the answers?
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by sadieann View Post
    Information is given about a complex polynomial f(x) whose coefficients are real numbers. Find the remaining zeros for f.
    Degree 3; zeros 2, 3 - i

    A. -3 + i

    B. none

    C. -2

    D. 3 + i

    E. None of the above

    how do you get the answers?
    If f(x) is a polynomial with real coefficients, and if a + bi is a zero of f, then a - bi is a zero of f.
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