College Algebra 7th Edition

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

Chapter P, Prerequisites - Section P.4 - Rational Exponents and Radicals - P.4 Exercises - Page 29: 27



Work Step by Step

RECALL: (i) $\sqrt[n]{a^n} = |a|$ when $n$ is even (ii) $\sqrt[n]{a^n} = a$ when $n$ is odd The given radical has n=4, which is even. Use rule (i) above to obtain: $\sqrt[4]{x^4}=|x|$
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