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Posted by Tristan on Tuesday, September 14, 2010 at 5:45pm.

Simplify (10x^2-6x-x^3)+(9x+x^3+5x^2)

combine like terms: (10x^2+5x^2)+(9x-6x)+(x^3-x^3) 15x^2 +(9x-6x)+(x^3-x^3) you can do the rest

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