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Posted by **Anonymous** on Thursday, February 3, 2011 at 9:07pm.

5x^4+3x^2-2x

-5x^4-3x^2+9x

_______________

0x^4+x^2+7x

is this right?

- algebra -
**ashley**, Thursday, February 3, 2011 at 9:45pmyes

- algebra -
**helper**, Thursday, February 3, 2011 at 9:52pmIf this is your problem

(5x^4 + 3x^2 - 2x) - (-5x^4 - 3x^2 + 9x)

Answer is

10x^4 + 6x^2 - 11x

- algebra -
**CHECK MY ANSWER**, Thursday, February 3, 2011 at 11:24pmthanks

- algebra -
**MattsRiceBowl**, Friday, February 4, 2011 at 12:10amIf they're not in parenthesis, the answer is 7x

Write out exactly how it is in the book.

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