Answer
$\left\{x \in R |x \neq -4\right\}$
Work Step by Step
The domain will be for all real numbers $R$ but except $x=-4$ because if we choose $x=-4$ then the denominator part will become as $0$, which is not allowed.
Thus,
Domain: $\left\{x \in R |x \neq -4\right\}$
