How do you use the properties of logarithms to expand #log_10 (y/2)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer G_Dub Apr 14, 2018 #log_10(y/2)=log_(10)y-log_(10)2# Explanation: #log_ax-log_ay=log_a(x/y)# #log_10(y/2)=log_(10)y-log_(10)2# 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 1816 views around the world You can reuse this answer Creative Commons License