Add the two polynomials and simplify:
(
−
10
x
4
+
7
x
3
−
2
x
)
+
(
3
x
4
−
9
x
3
−
2
)
\displaystyle {\left(-{10}{x}^{{4}}+{7}{x}^{{3}}-{2}{x}\right)}+{\left({3}{x}^{{4}}-{9}{x}^{{3}}-{2}\right)}
(
−
10
x
4
+
7
x
3
−
2
x
)
+
(
3
x
4
−
9
x
3
−
2
)
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Question 6
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