Rudolph2345 Rudolph2345

29-11-2016
Mathematics

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

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apologiabiology apologiabiology

29-11-2016

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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