CPM Homework Help : PC3 Problem 5-71

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5-71.

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

$\log(4)+\log(2)−\log(5)$
Step (a):
$\log(4\cdot 2)-\log(5)$

$\log_3(72)+\log_3(2)−\log_3(8)$
Step (b):
$\log(72\cdot 2)-\log(8)$

$\ln(9)+\ln(9)+\ln(9)$
Step (c):
$\ln(9\cdot 9\cdot 9)$

$\ln(e)−\ln(7)+\ln(2)$
Step (d):
$\ln\left(\frac{e}{7}\right)+\ln(2)$

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