8. [-/1 Points] DETAILS MY NOTES TGEIALG6 5.5.046. Use vertical form to add the polynomials. (Simplify your answer completely.) $$ \begin{array}{l} 9 x^{3}+7 x^{2}-9 x+2 \ 9 x^{3}-7 x^{2}-x-7 \ \hline \end{array} $$ $$ \square $$ SUBMIT ANSWER

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UpStudy AI · Accepted Answer

To add the given polynomials, align like terms and combine them:

$$
\begin{array}{r}
\phantom{+}9x^{3} + 7x^{2} - 9x + 2 \
+ \, 9x^{3} - 7x^{2} - x - 7 \
\hline
18x^{3} \phantom{+0x^{2}} - 10x - 5 \
\end{array}
$$

**Simplified Answer:**

$$ 18x^{3} - 10x - 5 $$
$$ 18x^{3} - 10x - 5 $$

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MY NOTES

TGEIALG6 5.5.046.

Use vertical form to add the polynomials. (Simplify your answer completely.)

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[-/1 Points] DETAILS MY NOTES TGEIALG6 5.5.046. Use vertical form to add the polynomials. (Simplify your answer completely.) SUBMIT ANSWER