Perform the indicated operations. $\left( x ^ { 2 } - 8 x - 4 \right) + \left( 8 x ^ { 2 } - 2 x - 4 \right) - \left( 3 x ^ { 2 } - 8 x - 3 \right)$
A) $6 x ^ { 2 } - 2 x - 11$
B) $6 x ^ { 2 } + 2 x - 5$
C) $6 x ^ { 2 } - 2 x - 5$
D) $- 6 x ^ { 2 } - 2 x + 11$
E) $6 x ^ { 2 } - 2 x + 5$

Question

Quizplus · Accepted Answer

First, combine like terms: $x^2 + 8x^2 - 3x^2 = 6x^2$, $-8x - 2x + 8x = -2x$, and $-4 - 4 + 3 = -5$. So, the result is $6x^2 - 2x - 5$.

Perform the Indicated Operations (x2−8x−4)+(8x2−2x−4)−(3x2−8x−3)\left( x ^ { 2 } - 8 x - 4 \right) + \left( 8 x ^ { 2 } - 2 x - 4 \right) - \left( 3 x ^ { 2 } - 8 x - 3 \right)(x2−8x−4)+(8x2−2x−4)−(3x2−8x−3)

Perform the Indicated Operations $\left( x ^ { 2 } - 8 x - 4 \right) + \left( 8 x ^ { 2 } - 2 x - 4 \right) - \left( 3 x ^ { 2 } - 8 x - 3 \right)$