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April 1, 2015

Posted by **carol** on Wednesday, May 4, 2011 at 12:31pm.

= 4a^3 - 7a^2-8a^3 - 1a^3

= 4a^3 - 8a^3 - 7a^2 - 1a^2

= (4-8)a^3 - (-7 - 1)a^2

= -4a^3 - 8a^2

Is this correct?

- math -
**PsyDAG**, Wednesday, May 4, 2011 at 1:14pmExcept for the typo in the second line, it looks correct.

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