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May 28, 2015

Homework Help: ALGEBRA

Posted by GGIFT on Thursday, February 25, 2010 at 8:05am.

If I add:
1+2x+6x^2+9x^3+7-2x+6x^2-9x^3...
won't I have to combine terms & then get
8+12x^2

cause won't the 9x^3 and the 2x cancel itself out???

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