Q. Write the expression below as a single logarithm in simplest form.2logb3−logb9Answer: logb(□)
Identify Properties: Identify the properties used to combine the logarithms.The expression given is 2logb3−logb9. To combine these logarithms into a single logarithm, we will use the power property and the subtraction property of logarithms.Power Property: logb(Pk)=k⋅logb(P)Subtraction Property: logb(P)−logb(Q)=logb(QP)
Apply Power Property: Apply the power property to the first term.The first term is 2logb3, which can be rewritten using the power property as logb(32).So, 2logb3 becomes logb(32) or logb(9).
Combine Logarithms: Combine the two logarithms using the subtraction property.Now we have logb(9) from the first term and −logb9 from the second term. Using the subtraction property, we can combine these into a single logarithm:logb(9)−logb9=logb(99).
Simplify Expression: Simplify the expression inside the logarithm.The expression inside the logarithm is 99, which simplifies to 1.So, logb(99) becomes logb(1).
Recognize Identity: Recognize the logarithmic identity.The logarithm of 1 to any base is always 0.Therefore, logb(1)=0.
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