Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises - Page 25: 108

Answer

a.) You can use an example to show that $\frac{a^m}{a^n}$(when m>n) = $a^{m-n}$ b.) You can use an example to show that $(\frac{a}{b})^n$ = $\frac{a^n}{b^n}$

Work Step by Step

a.) You can use an example to show that $\frac{a^m}{a^n}$(when m>n) = $a^{m-n}$ Example: $\frac{2^4}{2^2}$ = $\frac{16}{4}$ = $2^{2}$ $\frac{2^4}{2^2}$ = $2^{4-2} = 2^{2}$ b.) You can use an example to show that $(\frac{a}{b})^n$ = $\frac{a^n}{b^n}$ Example: $(\frac{2}{3})^3$ is the same thing as saying: $(\frac{2}{3})$ * $(\frac{2}{3})$ * $(\frac{2}{3})$ This equals $\frac{8}{27}$ $\frac{2^3}{3^3}$ = $\frac{8}{27}$
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