Incorrect. Substitute 6 for p and $\displaystyle-{3}\usepackage{cmbright}\Huge\$ for q to get $\displaystyle{4}{{\left({6}\right)}}^{{2}}-{{\left(-{3}\right)}}^{{2}}\usepackage{cmbright}\Huge\$ , and then follow the correct order of operations. The correct answer is 135.