How do you simplify log_2 64 + 7log_2 4 ? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer bp Mar 17, 2016 20 Explanation: log_2 64 + 7log_2 4 is equivalent to log_2 2^6 +log_2 4^7 = log_2 2^6 *2^14 =log_2 2^20 =20log_2 2 =20 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 1615 views around the world You can reuse this answer Creative Commons License