5.6: Logarithmic Properties - Mathematics LibreTexts
https://math.libretexts.org/Courses/Mission_College/Mat_1_College_Algebra_(Carr)/05%3A_Exponential_and_Logarithmic_Functions/5.06%3A_Logarithmic_Properties
WebDec 16, 2019 · logb (A C) = logb(AC−1) = logb(A) +logb(C−1) = logbA + (−1)logbC = logbA −logbC. We can also apply the product rule to express a sum or difference of logarithms as the logarithm of a product. With practice, we can look at a logarithmic expression and expand it mentally, writing the final answer.
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