Incorrect. Remember that dividing by 0 is undefined, so any values for x that yield division by 0 must be excluded. Substitute each of the values in for x in the expression. Which ones create expressions where dividing by 0 is necessary? Remember that values of x that result in a numerator or a denominator of 0 for the expression $\displaystyle\frac{{{{x}}^{{2}}+{8}{x}+{16}}}{{{{x}}^{{2}}+{5}{x}}}\usepackage{cmbright}\Huge\$ are excluded from the domain.