Remember that the domain will exclude values for which the value of the denominator is 0. When $\displaystyle{x}=-{3}\usepackage{cmbright}\Huge\$ , the denominator is $\displaystyle{\left({x}-{3}\right)}{\left({x}-{2}\right)}={\left(-{3}-{3}\right)}{\left(-{3}-{2}\right)}={\left(-{6}\right)}{\left(-{5}\right)}={30}\usepackage{cmbright}\Huge\$ , so $\displaystyle{x}=-{3}\usepackage{cmbright}\Huge\$ is within the domain of the expression. What is the value of x when $\displaystyle{x}-{3}={0}\usepackage{cmbright}\Huge\$ ? When $\displaystyle{x}-{2}={0}\usepackage{cmbright}\Huge\$ ?