To evaluate the expression 5^(log_5(10) - 1), one can utilize the properties of exponents and logarithms. The expression can be rewritten using the identity 5^(a + b) = 5^a * 5^b, allowing for simplification. Alternatively, converting the constant 1 into a logarithmic form facilitates combining the logarithmic terms. Understanding that exponentials and logarithms are inverse functions is crucial in this process. Reviewing logarithmic properties can further aid in solving the expression effectively.