Chapter 7 - Rational Functions - 7.1 Rational Functions and Variation - 7.1 Exercises - Page 567: 55

Domain: All real numbers, except $x= -5, x= -3$

The table shows that the function is undefined for $x=-5$ and $x= -3$. Hence, the domain is: \begin{equation} \begin{aligned} \text{Domain: All real numbers, except}&\\ x= -5\text{ and } x= -3. \end{aligned} \end{equation}