Answer
$\log _b \dfrac {p}{qr}$
Work Step by Step
$\log _{b}p-\log _{b}q-\log _{b}r=\left( \log _{b}p-\log _{b}q\right) -\log _{b}r=\log_b \dfrac {p}{q}-\log _{b}r=\log _b \dfrac {p}{qr}$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.3 Logarithmic Functions - 4.3 Exercises - Page 446: 86
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