Do the operation as indicated

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Find the sum of (-9 + 2n^5 - 4n^2) and ( 2n^5 - 8n^2 + 6)   My answer was 4n^5 - 12n^2 + 3.  Can you tell me if this is correct, please.

May 5th, 2015

(-9+2n^5-4n^2)+(2n^5-8n^2+6)=(2+2)n^5+(-4-8)n^2-9+6

=4n^5 - 12n^2 - 3

May 5th, 2015

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