Correct. The solution of this equation is $\displaystyle{x}=-{2}\usepackage{cmbright}\Huge\$ , and $\displaystyle{x}={4}\usepackage{cmbright}\Huge\$ and $\displaystyle{x}=-{4}\usepackage{cmbright}\Huge\$ are excluded from the domain because these values will lead to denominators of 0. Note that this equation has an extraneous solution of $\displaystyle{x}={4}\usepackage{cmbright}\Huge\$ .