How do you condense #2log_3 (x) + 5 log_3 (y) - 4log_3 (z)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Bdub Mar 22, 2016 #2log_3 x +5 log _3 y - 4 log _3 z##=log((x^2y^5)/(z^4))# Explanation: #2log_3 x +5 log _3 y - 4 log _3 z# #=log_3 x^2 + log_3 y^5-log_3 z^4#-> use properties#log_b(xy)=log_b x+log_by and log_b(x/y) =log_b x-log_b y# #=log((x^2y^5)/(z^4))# Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is #log_10 10#? How do I work in #log_10# in Excel? See all questions in Common Logs Impact of this question 3126 views around the world You can reuse this answer Creative Commons License