### Home > CCA2 > Chapter 10 > Lesson 10.1.1 > Problem10-23

10-23.

Without using a calculator, simplify and evaluate each of the following log expressions. Your result should be an expression without logarithms.

1. log$(4) +$ log$(25)$

These have the same base.
How does that help you to simplify?

1. $\frac { 7 ^ { \operatorname { log } _ { 7 } ( 3 ) } } { \operatorname { log } _ { 5 } 5 ^ { 4 } }$

$\frac{3}{4}$