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Posted by Chyenne on Wednesday, May 4, 2011 at 4:07pm.

X^3+5x^2-9x-45

are you factoring ? looks like "grouping" works nicely x^2(x+5) - 9(x+5) = (x+5)(x^2 - 9) = (x+5(x+3)(x-3)

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