Learn Before
Example

Try It 10.67: Expanding a Logarithm with a Radical

Apply the properties of logarithms to expand and simplify the expression log4x42y3z25\log_4\sqrt[5]{\frac{x^4}{2y^3z^2}}. First, rewrite the radical as a rational exponent and use the Power Property to bring it to the front, yielding 15log4(x42y3z2)\frac{1}{5}\log_4\left(\frac{x^4}{2y^3z^2}\right). Next, use the Quotient Property to separate the numerator and denominator: 15(log4(x4)log4(2y3z2))\frac{1}{5}(\log_4(x^4) - \log_4(2y^3z^2)). Then, apply the Product Property to expand the denominator terms: 15(log4(x4)(log42+log4y3+log4z2))\frac{1}{5}(\log_4(x^4) - (\log_4 2 + \log_4 y^3 + \log_4 z^2)). Apply the Power Property to the exponents inside the parentheses: 15(4log4x(log42+3log4y+2log4z))\frac{1}{5}(4\log_4 x - (\log_4 2 + 3\log_4 y + 2\log_4 z)). Since log42\log_4 2 simplifies to 12\frac{1}{2}, substitute this value and distribute the negative sign to get the completely expanded expression: 15(4log4x123log4y2log4z)\frac{1}{5}\left(4\log_4 x - \frac{1}{2} - 3\log_4 y - 2\log_4 z\right).

0

1

Updated 2026-05-25

Contributors are:

Who are from:

Tags

OpenStax

Intermediate Algebra @ OpenStax

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

Algebra

Related
Learn After