### Home > PC3 > Chapter 5 > Lesson 5.2.2 > Problem5-71

5-71.

Use the properties of logarithms to rewrite each of the following expressions using a single logarithm.

1. $\log(4)+\log(2)−\log(5)$

$\log(4\cdot 2)-\log(5)$

1. $\log_3(72)+\log_3(2)−\log_3(8)$

$\log(72\cdot 2)-\log(8)$

1. $\ln(9)+\ln(9)+\ln(9)$

$\ln(9\cdot 9\cdot 9)$

1. $\ln(e)−\ln(7)+\ln(2)$

$\ln\left(\frac{e}{7}\right)+\ln(2)$