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16 February, 14:55

Some one factor 3x^2+7x-20

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  1. 16 February, 15:14
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    Split it up

    3x^2+12x-5x-20

    group

    (3x^2+12x) + (-5x-20)

    factor

    (3x) (x+4) + (-5) (x+4)

    undistribute (x+4) like ab+ac=a (b+c)

    (3x-5) (x+4)
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