Correct. Apply the exponent 5 to each factor within the parentheses: $\displaystyle{{\left({3}\right)}}^{{5}}{{\left({{d}}^{{5}}\right)}}^{{5}}\usepackage{cmbright}\Huge\$

Simplify, using the power rule: $\displaystyle{243}{{d}}^{{{5}\cdot{5}}}={243}{{d}}^{{25}}\usepackage{cmbright}\Huge\$