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Math

posted by on .

Did I do this problem right?
Add. (x^9-2)+(x^9+2).
Here is what I did:
(x+x)^9+(-2+2)
2x^9+0
Is this correct? If not could you please explain it to me?
Thanks.

  • Math - ,

    Right! However, you do not need to include "+0."

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