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Factoring a cubic equation

  1. Sep 22, 2009 #1
    1. The problem statement, all variables and given/known data

    g(x)= x^4-2x^3-3x^2+2x+2

    2. Relevant equations



    3. The attempt at a solution

    After using synthesized division, got
    x^3-x^2-4x-2

    I need help in factoring from here please
     
  2. jcsd
  3. Sep 22, 2009 #2

    symbolipoint

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    I would try binomial divisors of (x+1), (x-1), (x+2), and (x-2).
     
  4. Sep 22, 2009 #3
    The reason for the choice of the factors above are from the http://en.wikipedia.org/wiki/Rational_root_theorem" [Broken], in case you were wondering.
     
    Last edited by a moderator: May 4, 2017
  5. Sep 24, 2009 #4
    Thank you for the help!
     
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