Posted by **jas20** on Friday, February 23, 2007 at 8:45pm.

4x-2x^2+4x^3 from 4x^3+x-3x^2

4x^3+x-3x^2

-( 4x-2x^2+4x^3)

then changing signs and rearranging terms.

4x^3+x-3x^2

-4x^3-4x+2x^2

answer after ADDING the above..

-3x - x^2

so for the answer isn't it the same as what i had

-x^2-3x doesnt' x^2 goes first then -3x

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