Simplify.
-If $P ( x ) = 4 x ^ { 2 } + 4 x + 4$ and $Q ( x ) = 7 x ^ { 2 } - 9$, find $3 [ P ( x ) ] + Q ( x )$.
A) $19 x ^ { 2 } - 12 x + 3$
B) $19 x ^ { 2 } + 12 x - 3$
C) $19 x ^ { 2 } + 12 x + 3$
D) $- 19 x ^ { 2 } + 12 x + 3$

Question

Quizplus · Accepted Answer

First, multiply $P(x)$ by 3: $3(4x^2 + 4x + 4) = 12x^2 + 12x + 12$. Then, add $Q(x)$ to this result: $12x^2 + 12x + 12 + 7x^2 - 9 = 19x^2 + 12x + 3$.

Simplify -If P(x)=4x2+4x+4P ( x ) = 4 x ^ { 2 } + 4 x + 4P(x)=4x2+4x+4

Simplify
-If $P ( x ) = 4 x ^ { 2 } + 4 x + 4$