Chapter 7 - Exponents and Exponential Functions - 7-4 Division Properties of Exponents - Practice and Problem-Solving Exercises - Page 443: 57

Dividing powers with the same base Negative exponent property

Dividing powers with the same base$:$ $\displaystyle \frac{2^{2}}{2^{5}}=2^{-3}\quad $... Negative exponent property: $=\displaystyle \frac{1}{2^{3}}$ $=\displaystyle \frac{1}{8}$