Simplify the polynomial by combining like terms.
-$$\left( 12 x ^ { 2 } y - 9 x y + 7 \right) + \left( - 11 x ^ { 2 } y + 5 x y - 8 \right)$$
A) $23 x ^ { 2 } y + 14 x y + 15$
B) $- x ^ { 2 } y - 14 x y + 15$
C) $- 4 x ^ { 3 } y ^ { 2 } - 1$
D) $x ^ { 2 } y - 4 x y - 1$

Question

Quizplus · Accepted Answer

Combining like terms: $12x^2y - 11x^2y = x^2y$, $-9xy + 5xy = -4xy$, and $7 - 8 = -1$.

Simplify the Polynomial by Combining Like Terms (12x2y−9xy+7)+(−11x2y+5xy−8)\left( 12 x ^ { 2 } y - 9 x y + 7 \right) + \left( - 11 x ^ { 2 } y + 5 x y - 8 \right)(12x2y−9xy+7)+(−11x2y+5xy−8)

Simplify the Polynomial by Combining Like Terms $\left( 12 x ^ { 2 } y - 9 x y + 7 \right) + \left( - 11 x ^ { 2 } y + 5 x y - 8 \right)$