You may have remembered that when you use the power property, the exponent becomes a factor. However, it should multiply the logarithm.

The expression $\displaystyle{\log}_{{{2}}}{{32}}^{{x}}\usepackage{cmbright}\Huge\$ simplifies to $\displaystyle{x}{\log}_{{{2}}}{32}\usepackage{cmbright}\Huge\$ .

You will then need to simplify $\displaystyle{\log}_{{{2}}}{32}\usepackage{cmbright}\Huge\$ .