## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises: 37

#### Answer

a) $\frac{x^7}{y}$ b) $\frac{a^9}{8b^6}$

#### Work Step by Step

a) $\frac{x^2y^{-1}}{x^-5}$ = $\frac{x^{2+5}}{y}$ = $\frac{x^7}{y}$ b) $(\frac{a^3}{2b^2})^3$ = $\frac{a^{(3)(3)}}{2^3b^{(2)(3)}}$ =$\frac{a^9}{8b^6}$

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