Perform the indicated operations. Write the resulting polynomial in standard form.
Add and Subtract Polynomials
-$$\left( 7 x ^ { 5 } + 6 x ^ { 2 } - 9 x \right) + \left( 3 x ^ { 5 } - 3 x ^ { 2 } - 9 x \right)$$
A) $10 x ^ { 5 } + 3 x ^ { 2 } - 18 x$
B) $- 6 x ^ { 5 } + 4 x ^ { 2 } - 3 x$
C) $10 x + 3 x ^ { 5 } - 18 x ^ { 2 }$
D) $- 5 x ^ { 8 }$

Question

Quizplus · Accepted Answer

Adding the like terms: $7x^5 + 3x^5 = 10x^5$, $6x^2 - 3x^2 = 3x^2$, and $-9x - 9x = -18x$, resulting in $10x^5 + 3x^2 - 18x$.

Perform the Indicated Operations (7x5+6x2−9x)+(3x5−3x2−9x)\left( 7 x ^ { 5 } + 6 x ^ { 2 } - 9 x \right) + \left( 3 x ^ { 5 } - 3 x ^ { 2 } - 9 x \right)(7x5+6x2−9x)+(3x5−3x2−9x)

Perform the Indicated Operations $\left( 7 x ^ { 5 } + 6 x ^ { 2 } - 9 x \right) + \left( 3 x ^ { 5 } - 3 x ^ { 2 } - 9 x \right)$