Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.3 - Radicals and Rational Exponents - Exercise Set - Page 46: 94



Work Step by Step

$\displaystyle \frac{72x^{3/4}}{9x^{1/3}}=\frac{72}{9}\cdot\frac{x^{3/4}}{x^{1/3}}\qquad$... apply $\displaystyle \frac{a^{m}}{a^{n}}=a^{m-n}$ $=8\cdot x^{3/4-1/3}\qquad$...$\displaystyle \frac{3}{4}-\frac{1}{3}=\frac{9-4}{12}$ ... $=8x^{5/12}$
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