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Mathematics 8 Online
OpenStudy (anonymous):

how do I factor -30x^4 +720x^3

OpenStudy (mertsj):

First factor out the common factor -30x^3

OpenStudy (anonymous):

Okay, I got -30x^3(x-24) but I'm not sure if that's right.

OpenStudy (mertsj):

Good job!!

OpenStudy (anonymous):

But now I have to set each one to zero and solve for each one and I'm not sure how to solve for -30x^3 = 0

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