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Try It 10.68: Expanding a Logarithm with a Radical

Apply the properties of logarithms to expand the expression log3x25yz3\log_3\sqrt[3]{\frac{x^2}{5yz}}. First, express the radical as a fractional exponent and use the Power Property to move it to the front as a coefficient: 13log3(x25yz)\frac{1}{3}\log_3\left(\frac{x^2}{5yz}\right). Next, apply the Quotient Property to split the fraction: 13(log3(x2)log3(5yz))\frac{1}{3}(\log_3(x^2) - \log_3(5yz)). Then, use the Product Property to expand the terms in the denominator: 13(log3(x2)(log35+log3y+log3z))\frac{1}{3}(\log_3(x^2) - (\log_3 5 + \log_3 y + \log_3 z)). Use the Power Property again on the first term: 13(2log3x(log35+log3y+log3z))\frac{1}{3}(2\log_3 x - (\log_3 5 + \log_3 y + \log_3 z)). Finally, distribute the negative sign to obtain the fully expanded expression: 13(2log3xlog35log3ylog3z)\frac{1}{3}(2\log_3 x - \log_3 5 - \log_3 y - \log_3 z).

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Updated 2026-05-25

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Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax

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