Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 7 - Exponential and Logarithmic Functions - 7-4 Properties of Logarithms - Practice and Problem-Solving Exercises - Page 466: 12

Answer

$\log\left({\frac{2}{3}}\right)$

Work Step by Step

Use the Power Property of Logarithms to rewrite this expression. The property states that $\log_b {m^n} = n \log_b {m}$. Thus, the given expression is equivalent to: $\log {8} - \log {6^{2}} + \log {3}$ Evaluate the exponential term: $\log {8} - \log {36} + \log {3}$ Use the Quotient Property of Logarithms. According to this property, $\log_b {m} - \log_b {n} = \log_b \frac {m}{n}$. Thus, the expression above is equivalent to: $\log\left(\frac{8}{36}\right) + \log {3}$ Use the Product Property of Logarithms. According to this property, $\log_b {mn} = \log_b {m} + \log_b {n}$. Thus, the expression above is equivalent to: $\log{\left[\left(\frac{8}{36}\right)(3)\right]}$ Multiply to simplify: $\log{\left(\frac{8 \cdot 3}{36}\right)}$ Simplify: $\log{\frac{24}{36}}$ Simplify the fraction by dividing both numerator and denominator by their greatest common factor, $12$: $\log{\left(\frac{2}{3}\right)}$
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