Posted by GGIFT on Thursday, February 25, 2010 at 8:05am.
If I add:
1+2x+6x^2+9x^3+72x+6x^29x^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???

ALGEBRA  Reiny, Thursday, February 25, 2010 at 8:17am
You can only add/subtract "like" terms, that is, you can add x^3's to x^'s, x's to x's etc.
so yes, you are right.

ALGEBRA  GGIFT, Thursday, February 25, 2010 at 8:20am
thanks!!!
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