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Math Help - factoring special polynomials

  1. #1
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    Nov 2008
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    1

    factoring special polynomials

    1. 25x^squared-36y^squared

    2. 4x^squared-12x+9

    3. 10x^2-90

    4. 5x^cubed-35x^squared-150x

    someone please help I'm lost
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  2. #2
    Member
    Joined
    Sep 2008
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    120
    2) it will start off as (2x )(2x ) You will have to figure out the factors of 9 that when I multiply each by 2x they will add or subtract to be 12x need sign in front


    3) Take out a 10
    10(x^sqrd-9) break that up, factors of 9 have to add or subtract to be 0


    4) Take out a 5x(x^2-7x-30) break up whats in the ()
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