If $x=2$, then $(x+2-x)(2-x-2)$ equals
(A) -12
(B) 4
(C) 0
(D) 12
(E) -4
When $x=2$, we have $(x+2-x)(2-x-2)=(2+2-2)(2-2-2)=(2)(-2)=-4$.

Alternatively, we could simplify $(x+2-x)(2-x-2)$ to obtain $(2)(-x)$ or $-2 x$ and then substitute $x=2$ to obtain a result of $-2(2)$ or -4 .

ANswer: (E)