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Math Help - Factorizing

  1. #1
    Member purplec16's Avatar
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    Factorizing

    (1) 12x^3-3xy^2
    Thought it factored out to get 3x(4x^2-y^2)
    but I got it wrong... so whats the write way?
    Last edited by purplec16; November 15th 2009 at 09:21 AM. Reason: found out the answer for a problem on my own
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  2. #2
    MHF Contributor
    skeeter's Avatar
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    Quote Originally Posted by purplec16 View Post
    (1) 12x^3-3xy^2
    Thought it factored out to get 3x(4x^2-y^2)
    but I got it wrong... so whats the write way?
    you didn't finish ... (4x^2-y^2) is also factorable
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  3. #3
    Member purplec16's Avatar
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    Oh...

    Thanks, my mistake... so it would be 3x(2x+y)(2x-y)
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