Chapter 4 - Polynomials - Test: Chapter 4 - Page 300: 14

$\dfrac{c^3}{a^3b^3}$

Using the laws of exponents, the given expression, $ \left( \dfrac{ab}{c} \right)^{-3} ,$ is equivalent to \begin{array}{l}\require{cancel} \left( \dfrac{c}{ab} \right)^{3} \\\\= \dfrac{c^3}{a^3b^3} .\end{array}