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Write the expression below as a single logarithm in simplest form.

5log_(b)2-log_(b)4
Answer: 
log_(b)(◻)

Write the expression below as a single logarithm in simplest form.\newline5logb2logb4 5 \log _{b} 2-\log _{b} 4 \newlineAnswer: logb() \log _{b}(\square)

Full solution

Q. Write the expression below as a single logarithm in simplest form.\newline5logb2logb4 5 \log _{b} 2-\log _{b} 4 \newlineAnswer: logb() \log _{b}(\square)
  1. Recognize Properties: Recognize the properties of logarithms that can be applied.\newlineThe expression given is a combination of two logarithms with the same base that are being subtracted. We can use the power property of logarithms to rewrite the first term and the quotient property to combine the terms into a single logarithm.
  2. Apply Power Property: Apply the power property to the first term.\newlineThe power property of logarithms states that logb(an)=nlogb(a)\log_b(a^n) = n \cdot \log_b(a). We can apply this property to the first term to rewrite 5logb25\log_{b}2 as logb(25)\log_{b}(2^5).\newlineCalculation: 25=322^5 = 32
  3. Combine Using Quotient Property: Combine the two logarithms using the quotient property.\newlineThe quotient property of logarithms states that logb(a)logb(c)=logb(ac)\log_b(a) - \log_b(c) = \log_b\left(\frac{a}{c}\right). We can apply this property to combine logb(32)\log_{b}(32) and logb(4)\log_{b}(4) into a single logarithm.\newlineCalculation: logb(324)\log_{b}\left(\frac{32}{4}\right)
  4. Simplify Inside Logarithm: Simplify the expression inside the logarithm.\newlineWe need to divide 3232 by 44 to simplify the expression inside the logarithm.\newlineCalculation: 32/4=832 / 4 = 8
  5. Write Final Answer: Write the final answer.\newlineThe expression 5logb2logb45\log_{b}2 - \log_{b}4 can be written as a single logarithm as logb(8)\log_{b}(8).

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