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Solving a Logarithmic Equation - Problem 5

Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

If two logs have the same base and log x = log y, then x = y. There must not be any sums or differences, and any factors must be written as exponents first. This is a nice way to get rid of logs all together, but remember to check for extraneous solutions! Whatever you put into a log function must be greater than zero.

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