Chapter 7 - Exponents and Exponential Functions - 7-1 Zero and Negative Exponents - Practice and Problem-Solving Exercises - Page 421: 33

$\frac{6}{ac^{3}}$

Recall, anything raised to the zeroth power is 1. Thus, this expression simplifies to: $6a^{-1}c^{-3}$ Recall the equation: $a^{-n}= \frac{1}{a^{n}}$. Thus, we simplify this expression: $\frac{6}{ac^{3}}$