Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - 11.3 - Fractional Exponents - Problem Set 11.3: 25

Answer

-3

Work Step by Step

Remember, raising a number to the ⅓ power is the same as taking the cube root of that number. Also, recall, when a number is raised to the third power, the cube root cancels out the exponent. Thus, we obtain: $- \sqrt[3] {27}=- \sqrt[3] {3^{3}}=-3$
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