Subtract.
-$$\left( 8 x ^ { 7 } + 8 x ^ { 5 } - 16 \right) - \left( - 18 x ^ { 5 } + 4 x ^ { 7 } + 16 \right)$$
A) $4 x ^ { 7 } + 26 x ^ { 5 } - 32$
B) $- 2 x ^ { 12 }$
C) $4 x ^ { 7 } + 12 x ^ { 5 } - 32$
D) $4 x ^ { 7 } + 26 x ^ { 5 } + 32$

Question

Quizplus · Accepted Answer

Subtracting the second polynomial from the first gives: $8x^7 + 8x^5 - 16 - (-18x^5 + 4x^7 + 16) = 8x^7 + 8x^5 - 16 + 18x^5 - 4x^7 - 16 = 4x^7 + 26x^5 - 32$.

Subtract - (8x7+8x5−16)−(−18x5+4x7+16)\left( 8 x ^ { 7 } + 8 x ^ { 5 } - 16 \right) - \left( - 18 x ^ { 5 } + 4 x ^ { 7 } + 16 \right)(8x7+8x5−16)−(−18x5+4x7+16)

Subtract
- $\left( 8 x ^ { 7 } + 8 x ^ { 5 } - 16 \right) - \left( - 18 x ^ { 5 } + 4 x ^ { 7 } + 16 \right)$