Answer
$\{x\in \mathbb{R}|x\neq-2\}$
Work Step by Step
The domain of a function defined over real numbers is the set of numbers for which $f(x) $ can be calculated.
$f(x)$ can be calculated for all real x, except the ones producing a zero in the denominator.
We need to exclude all x for which $x+2=0$,
that is, $x=-2.$
Domain = $\{x\in \mathbb{R}|x\neq-2\}$
