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Homework Help: Algebta (factoring polynomials)

  1. Mar 9, 2008 #1
    [SOLVED] Algebta (factoring polynomials)

    1. The problem statement, all variables and given/known data

    x^2 * [ (1/2) * (1-x^2)^(-1/2) * (-2x)] + (1 - x^2)^(1/2) * (2x)

    factor this down.

    2. Relevant equations

    3. The attempt at a solution

    -x^3*(1- x^2)^(-1/2) + 2x(1 - x^2)^(1/2)

    I understand how you get to this part, but I can't get to:

    x * (2 - 3x^2)/ (sqrt(1 - x^2))

    after trying factoring by substitution etc.
  2. jcsd
  3. Mar 10, 2008 #2
    I figured it out. Get CD and factor - just thought i was missing some rule or something.
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