College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Chapter P Test - Page 79: 5

Answer

a) $-64$ b) $64$ c) $\frac{1}{64}$ d) $\frac{1}{49}$ e) $\frac{4}{9}$ f) $\frac{1}{2}$ g) $\frac{9}{16}$ h) $\frac{1}{27}$

Work Step by Step

a) $-2^{6}$ $=-64$ b) $(-2)^{6}$ $=64$ c) $2^{-6}$ $=\frac{1}{2^{6}}$ $=\frac{1}{64}$ d) $\frac{7^{10}}{7^{12}}$ $=\frac{1}{7^{2}}$ $=\frac{1}{49}$ e) $(\frac{3}{2})^{-2}$ $=(\frac{2}{3})^{2}$ $=\frac{4}{9}$ f) $\frac{\sqrt[5]{32}}{\sqrt16}$ $=\frac{2}{4}$ $=\frac{1}{2}$ g) $\sqrt[4]{\frac{3^{8}}{2^{16}}}$ $=\frac{3^{2}}{2^{4}}$ $=\frac{9}{16}$ h) $81^{-\frac{3}{4}}$ $=\frac{1}{(\sqrt[4]81)^{3}}$ $=\frac{1}{27}$
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