Add the polynomials.
-$\left( 5 x ^ { 3 } + 5 x - 5 \right) + \left( - 8 x ^ { 2 } + 2 x - 7 \right)$
A) $- 3 x ^ { 3 } + 7 x - 12$
B) $- 3 x ^ { 3 } - 3 x ^ { 2 } - 5 x - 7$
C) $5 x ^ { 3 } - 3 x ^ { 2 } - 3 x - 7$
D) $5 x ^ { 3 } - 8 x ^ { 2 } + 7 x - 12$

Question

Add the polynomials.
-$\left( 5 x ^ { 3 } + 5 x - 5 \right) + \left( - 8 x ^ { 2 } + 2 x - 7 \right)$
A) $- 3 x ^ { 3 } + 7 x - 12$
B)  $- 3 x ^ { 3 } - 3 x ^ { 2 } - 5 x - 7$
C) $5 x ^ { 3 } - 3 x ^ { 2 } - 3 x - 7$
D) $5 x ^ { 3 } - 8 x ^ { 2 } + 7 x - 12$

Quizplus · Accepted Answer

Combine like terms: $5x^3$, $-8x^2$, $5x + 2x = 7x$, and $-5 - 7 = -12$.

Add the Polynomials (5x3+5x−5)+(−8x2+2x−7)\left( 5 x ^ { 3 } + 5 x - 5 \right) + \left( - 8 x ^ { 2 } + 2 x - 7 \right)(5x3+5x−5)+(−8x2+2x−7)

Add the Polynomials $\left( 5 x ^ { 3 } + 5 x - 5 \right) + \left( - 8 x ^ { 2 } + 2 x - 7 \right)$