Triple X

For non-zero integer values $x$ , there are only $2$ possibilities, $-1$ and $1$ . $(-1)^{-1}=(-1)$ and $1^{1}=1$ . The answer is $\boxed{2}$ .

1 and -1

it can be solved expt....

1^1 = 1

-1^-1 = 1/-1 = -1