February 26, 2017

Homework Help: Algebra

Posted by Katie on Wednesday, October 7, 2009 at 5:53pm.

x^3-3x^2+3x-9=0. My book factors it to x^2(x-3)+3(x-3)=0, but then it magically becomes (x-3)(x^2+3). I have no idea how it became these numbers. Could you explain please? Thanks!

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