Add or subtract.
-$$\left( 8 x ^ { 2 } - 6 x + 20 \right) - \left( 4 x ^ { 2 } + 5 x - 40 \right)$$
A) $4 x ^ { 2 } - 11 x + 60$
B) $4 x ^ { 2 } - - 11 x + 60$
C) $4 x ^ { 2 } - 11 x - 20$
D) $4 x ^ { 2 } + 11 x + 60$

Question

Quizplus · Accepted Answer

Subtracting the second polynomial from the first gives $8x^2 - 6x + 20 - (4x^2 + 5x - 40) = 4x^2 - 11x + 60$.

Add or Subtract (8x2−6x+20)−(4x2+5x−40)\left( 8 x ^ { 2 } - 6 x + 20 \right) - \left( 4 x ^ { 2 } + 5 x - 40 \right)(8x2−6x+20)−(4x2+5x−40)

Add or Subtract $\left( 8 x ^ { 2 } - 6 x + 20 \right) - \left( 4 x ^ { 2 } + 5 x - 40 \right)$