How do you expand log(1ABC)? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Rafael Oct 25, 2015 log(1ABC)=−log(A)+log(B)+log(C) Explanation: [1] log(1ABC) Property: logb(mn)=logb(m)+logb(n) [2] =log(1A)+log(B)+log(C) Property: logb(mn)=logb(m)−logb(n) [3] =log(1)−log(A)+log(B)+log(C) Property: logb(1)=0 [4] =−log(A)+log(B)+log(C) 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 log1010? How do I work in log10 in Excel? See all questions in Common Logs Impact of this question 2302 views around the world You can reuse this answer Creative Commons License