Hi, what do you want to do?
Brian McLogan
Pre-Calculus - Evaluating the Sum of Two Logarithms
👉 Learn how to evaluate logarithm expression. Recall that the logarithm of a number say a to the base of another number say b is a number say n which when raised as a power of b gives a. (i.e. log [base b] (a) = n means that b^n = a)....
Khan Academy
Khan Academy: Algebra: Proof: Log a + Log B = Log Ab
Shows a proof of the property that multiplication inside the log can be turned into addition outside the log. log_ab = log_a + log_b. [7:08]
Khan Academy
Khan Academy: Algebra: Sum of Logarithms With Same Base
Demonstrates how to apply the logarithm property regarding the sum of logarithms with the same base to simplify a logarithmic expression. [5:04]
Khan Academy
Khan Academy: Algebra: Introduction to Logarithm Properties
Identifies the properties for adding and subtracting logarithms with the same base. Practice problems available. [9:15]