Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 8 - Section 8.3 - Operations with Radicals - Exercise Set: 84

Answer

$-\sqrt[3]3$

Work Step by Step

$7\sqrt[3]{24}-5\sqrt[3]{81}$ Factor out perfect cubes. $7\sqrt[3]{(8)(3)}-5\sqrt[3]{(27)(3)}$ Simplify. $7(2)\sqrt[3]{3}-5(3)\sqrt[3]{3}$ $14\sqrt[3]3-15\sqrt[3]3$ Add like radicals. $-\sqrt[3]3$
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