Perform the indicated operations and simplify.
-$$\left( 7 x ^ { 4 } + 7 x ^ { 3 } - 2 x ^ { 2 } - 2 \right) + \left( 3 x ^ { 4 } - 2 x ^ { 3 } - 6 x ^ { 2 } - 9 \right)$$
A) $10 x ^ { 4 } + 5 x ^ { 3 } - 2 x ^ { 2 } + 10$
B) $10 x ^ { 4 } + 5 x ^ { 3 } - 8 x ^ { 2 } - 11$
C) $7 x ^ { 18 } - 11$
D) $10 x ^ { 8 } + 5 x ^ { 6 } - 8 x ^ { 4 } - 11$

Question

Quizplus · Accepted Answer

To simplify the expression, combine like terms: $7x^4 + 3x^4 = 10x^4$, $7x^3 - 2x^3 = 5x^3$, $-2x^2 - 6x^2 = -8x^2$, and $-2 - 9 = -11$. This results in $10x^4 + 5x^3 - 8x^2 - 11$.

Perform the Indicated Operations and Simplify (7x4+7x3−2x2−2)+(3x4−2x3−6x2−9)\left( 7 x ^ { 4 } + 7 x ^ { 3 } - 2 x ^ { 2 } - 2 \right) + \left( 3 x ^ { 4 } - 2 x ^ { 3 } - 6 x ^ { 2 } - 9 \right)(7x4+7x3−2x2−2)+(3x4−2x3−6x2−9)

Perform the Indicated Operations and Simplify $\left( 7 x ^ { 4 } + 7 x ^ { 3 } - 2 x ^ { 2 } - 2 \right) + \left( 3 x ^ { 4 } - 2 x ^ { 3 } - 6 x ^ { 2 } - 9 \right)$