Sure! The expression \( 3\sqrt{5} \) can be rewritten using a rational exponent as follows:
\[ 3\sqrt{5} = 3 \cdot 5^{1/2} \]
Here, \( \sqrt{5} \) is expressed as \( 5^{1/2} \). Therefore, the expression \( 3\sqrt{5} \) can be rewritten as:
\[ 3 \cdot 5^{1/2} \]