How do you solve log- m+2 = 4 ? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer Parabola Apr 19, 2018 m=-100 Explanation: I am assuming that we have: log(-m)+2=4 =>log_10(-m)=2 Remember that: If log_a(b)=c, then b=a^c =>-m=10^2 =>-m=100 =>m=-100 Answer link Related questions What is a logarithm? What are common mistakes students make with logarithms? How can a logarithmic equation be solved by graphing? How can I calculate a logarithm without a calculator? How can logarithms be used to solve exponential equations? How do logarithmic functions work? What is the logarithm of a negative number? What is the logarithm of zero? How do I find the logarithm log_(1/4) 1/64? How do I find the logarithm log_(2/3)(8/27)? See all questions in Logarithm-- Inverse of an Exponential Function Impact of this question 7859 views around the world You can reuse this answer Creative Commons License