Solved

Subtract
- $\left(-9 x^{7}+8 x^{9}-8-3 x^{8}\right)-\left(-4-9 x^{8}+4 x^{9}-3 x^{7}\right)$ A) $4 x^{9}-12 x^{8}-12 x^{7}-12$

Question 314

Multiple Choice

Subtract.
- $\left(-9 x^{7}+8 x^{9}-8-3 x^{8}\right) -\left(-4-9 x^{8}+4 x^{9}-3 x^{7}\right)$

A) $4 x^{9}-12 x^{8}-12 x^{7}-12$
B) $4 x^{9}+6 x^{8}-6 x^{7}-4$
C) $12 x^{9}-12 x^{8}-12 x^{7}-12$
D) $12 x^{9}-12 x^{8}-12 x^{7}-4$

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