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Math Help - basic factoring problems

  1. July 2nd 2010, 03:58 PM #1
    aykhwang
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    [SOLVED] basic factoring problems

    factor completely

    (c-d)^2-e^2
    m^2-(n-1)^2
    x^4-1

    wow i am so stupid i completely forgot a^2-b^2
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  2. July 3rd 2010, 01:22 AM #2
    Amer
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    you just need to know that

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

    for example last one

    x^4 -1 = (x^2 -1 )( x^2 +1 ) = (x-1)(x+1)(x^2+1)
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