Answer
$ 14s^{4}-4s^{2}+9s+7 $
Work Step by Step
Simplify and write in standard form
$ (6s^{4}+7s^{2}+7)+(8s^{4}-11s^{2}+9s) $
Simplify and combine like terms
$ 14s^{4}-4s^{2}+9s+7 $
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