$\displaystyle{2}{{x}}^{{4}}\usepackage{cmbright}\Huge\$ is not a factor of $\displaystyle{8}{{x}}^{{2}}\usepackage{cmbright}\Huge\$ because $\displaystyle{{x}}^{{4}}\usepackage{cmbright}\Huge\$ is not a factor of $\displaystyle{{x}}^{{2}}\usepackage{cmbright}\Huge\$ .