Perform the indicated operation below and simplify if possible by combining like terms. Write the result in standard form. $\left( y ^ { 2 } - 9 y + 4 \right) + \left( 8 y ^ { 2 } - y + 6 \right)$
A) $- 7 y ^ { 2 } - 8 y + 10$
B) $- 7 y ^ { 2 } - 10 y + 10$
C) $9 y ^ { 2 } - 10 y - 2$
D) $9 y ^ { 2 } - 8 y + 10$
E) $9 y ^ { 2 } - 10 y + 10$

Question

Quizplus · Accepted Answer

Combine like terms: $y^2 + 8y^2 = 9y^2$, $-9y - y = -10y$, and $4 + 6 = 10$. The result is $9y^2 - 10y + 10$.

Perform the Indicated Operation Below and Simplify If Possible by Combining