Answer
A) No
B) $4x^2+24x+36 $
Work Step by Step
Given $$\begin{aligned}
(2x+6)^2.
\end{aligned}$$ Part A
No. The power rule is not applicable to addition.
Part B
We square the binomial by multiplying the binomials using the FOIL method:
$$\begin{aligned}
(2x+6)^2&= (2x+6)(2x+6)\\
&= 4x^2+12x+12x+36\\
&= 4x^2+24x+36.
\end{aligned}$$
