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Algebra question (irreducibility of polynomial)

  1. Nov 25, 2007 #1
    1. The problem statement, all variables and given/known data
    Show that this polynomial is irreducible over Q[x]


    2. Relevant equations
    x^4 + 6x^3 + 14x^2 + 16x + 9


    3. The attempt at a solution
    I think Eisenstein's criterion will have to be used. But is some substitution to be made??
    Please help!
    Thanks
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 25, 2007 #2

    morphism

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    Science Advisor
    Homework Helper

    Try x=y+1.
     
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