Find the sum or difference.
-$$\left( 7 n ^ { 6 } - 9 n + 2 n ^ { 3 } \right) + \left( 7 n ^ { 3 } + 6 n ^ { 6 } - 4 n \right)$$
A) $13 n ^ { 6 } + 9 n ^ { 3 } - 13 n$
B) $13 n + 9 n ^ { 6 } - 13 n ^ { 3 }$
C) $- 3 n ^ { 6 } + 14 n ^ { 3 } - 2 n$
D) $9 \mathrm { n } ^ { 10 }$

Question

Quizplus · Accepted Answer

To find the sum, combine like terms: $7n^6 + 6n^6 = 13n^6$, $2n^3 + 7n^3 = 9n^3$, and $-9n - 4n = -13n$.

Find the Sum or Difference (7n6−9n+2n3)+(7n3+6n6−4n)\left( 7 n ^ { 6 } - 9 n + 2 n ^ { 3 } \right) + \left( 7 n ^ { 3 } + 6 n ^ { 6 } - 4 n \right)(7n6−9n+2n3)+(7n3+6n6−4n)

Find the Sum or Difference $\left( 7 n ^ { 6 } - 9 n + 2 n ^ { 3 } \right) + \left( 7 n ^ { 3 } + 6 n ^ { 6 } - 4 n \right)$