Add or subtract as indicated.
-$\left(3 n^{7}+9 n^{5}+11 n\right)-\left(9 n^{7}-17 n^{5}+4 n\right)$
A) $-6 n^{7}+18 n^{5}+15 n$
B) $27 n^{13}$
C) $-6 n^{7}+26 n^{5}+7 n$
D) $-6 n^{7}+26 n^{5}+15 n$

Question

Quizplus · Accepted Answer

Subtract the coefficients of like terms: $3n^7 - 9n^7 = -6n^7$, $9n^5 - (-17n^5) = 26n^5$, and $11n - 4n = 7n$.

Add or Subtract as Indicated (3n7+9n5+11n)−(9n7−17n5+4n)\left(3 n^{7}+9 n^{5}+11 n\right)-\left(9 n^{7}-17 n^{5}+4 n\right)(3n7+9n5+11n)−(9n7−17n5+4n)

Add or Subtract as Indicated $\left(3 n^{7}+9 n^{5}+11 n\right)-\left(9 n^{7}-17 n^{5}+4 n\right)$