All $\displaystyle{x}\usepackage{cmbright}\Huge\$ , $\displaystyle{x}\ne{4}\usepackage{cmbright}\Huge\$ , $\displaystyle{x}\ne-{4}\usepackage{cmbright}\Huge\$ , $\displaystyle{x}\ne{2}\usepackage{cmbright}\Huge\$ , and $\displaystyle{x}\ne-{2}\usepackage{cmbright}\Huge\$