Question

Simplify log_10(25) + log_10(4).

Solution

1. Use the product rule: log m + log n = log(mn).
2. log_10(25) + log_10(4) = log_10(25 x 4) = log_10(100).
3. Since 10^2 = 100, log_10(100) = 2.
4. Therefore, the value is 2.