Subtract the polynomials. Assume all variable exponents represent whole numbers.
-$$\left( 3 x ^ { 6 } - 15 x ^ { 3 } - 11 \right) - \left( 9 x ^ { 6 } - 20 x ^ { 3 } + 3 \right)$$
A) $- 6 x ^ { 6 } + 5 x ^ { 3 } - 14$
B) $- 15 x ^ { 9 }$
C) $- 6 x ^ { 6 } + 5 x ^ { 3 } - 8$
D) $- 6 x ^ { 6 } - 6 x ^ { 3 } - 8$

Question

Quizplus · Accepted Answer

Subtracting the second polynomial from the first gives: $3x^6 - 9x^6 = -6x^6$, $-15x^3 - (-20x^3) = 5x^3$, and $-11 - 3 = -14$, resulting in $-6x^6 + 5x^3 - 14$.

Subtract the Polynomials (3x6−15x3−11)−(9x6−20x3+3)\left( 3 x ^ { 6 } - 15 x ^ { 3 } - 11 \right) - \left( 9 x ^ { 6 } - 20 x ^ { 3 } + 3 \right)(3x6−15x3−11)−(9x6−20x3+3)

Subtract the Polynomials $\left( 3 x ^ { 6 } - 15 x ^ { 3 } - 11 \right) - \left( 9 x ^ { 6 } - 20 x ^ { 3 } + 3 \right)$