## Algebra: A Combined Approach (4th Edition)

{$\frac{3}{2}$}
Step 1: $5^{2x}=125$ Step 2: $5^{2x}=5^{3}$ Step 3: $2x=3$ Step 4: $x=\frac{3}{2}$ Therefore, the solution set is {$\frac{3}{2}$}.