The value of $(2+3)^{2}-\left(2^{2}+3^{2}\right)$ is
(A) 12
(B) 0
(C) 30
(D) 16
(E) -3
Evaluating,

$$
\begin{aligned}
(2+3)^{2}-\left(2^{2}+3^{2}\right) & =5^{2}-(4+9) \\
& =25-13 \\
& =12
\end{aligned}
$$

ANSWER: (A)