Incorrect. The power rule says $\displaystyle{{\left({{x}}^{{a}}\right)}}^{{b}}={{x}}^{{{a}\cdot{b}}}\usepackage{cmbright}\Huge\$ , so $\displaystyle{{\left({{x}}^{{2}}\right)}}^{{3}}={{x}}^{{{2}\cdot{3}}}\usepackage{cmbright}\Huge\$ .