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Math Help - Irreducable ploynomial in Z5

  1. #1
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    Question Irreducable ploynomial in Z5

    F= x^3 + 2x + 1 irreducable in Z5 (Z subscript 5)

    i have tried EC looking at F(x+1) which doesnt work for me. Cant think of what else to try.

    Help much appreciated
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  2. #2
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    Quote Originally Posted by Niall101 View Post
    F= x^3 + 2x + 1 irreducable in Z5 (Z subscript 5)

    i have tried EC looking at F(x+1) which doesnt work for me. Cant think of what else to try.

    Help much appreciated
    Just check if any element in \mathbb{Z}_5 solves the polynomial.
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