$\left(2 x^{8}-9 x^{6}+8 x^{2}+4\right)+\left(8 x^{7}+5 x^{6}-4 x\right)$
A) $10 x^{8}-14 x^{6}+8 x^{2}-4 x+4$
B) $2 x^{8}+8 x^{7}-4 x^{6}+8 x^{2}-4 x+4$
C) $2 x^{8}+8 x^{7}+4 x^{6}+8 x^{2}-4 x+4$
D) $10 x^{8}-4 x^{6}+8 x^{2}-4 x+4$

Question

Quizplus · Accepted Answer

To find the sum, combine like terms: $2x^8 + 8x^7 - 9x^6 + 5x^6 + 8x^2 - 4x + 4$, which simplifies to $2x^8 + 8x^7 - 4x^6 + 8x^2 - 4x + 4$.

(2x8−9x6+8x2+4)+(8x7+5x6−4x)\left(2 x^{8}-9 x^{6}+8 x^{2}+4\right)+\left(8 x^{7}+5 x^{6}-4 x\right)(2x8−9x6+8x2+4)+(8x7+5x6−4x) A) 10x8−14x6+8x2−4x+410 x^{8}-14 x^{6}+8 x^{2}-4 x+410x8−14x6+8x2−4x+4

$\left(2 x^{8}-9 x^{6}+8 x^{2}+4\right)+\left(8 x^{7}+5 x^{6}-4 x\right)$ A) $10 x^{8}-14 x^{6}+8 x^{2}-4 x+4$