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Math Help - Rational expressions

  1. #1
    Newbie
    Joined
    Dec 2007
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    5

    Rational expressions

    need help!! x-2
    x3-8
    Last edited by mzdnique; December 5th 2007 at 07:10 PM.
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  2. #2
    Senior Member
    Joined
    Dec 2007
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    Melbourne
    Posts
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    Here are some formulae that might be useful:

    a^3+b^3 = (a+b)(a^2-ab+b^2)
    a^3-b^3 = (a-b)(a^2+ab+b^2)
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