Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.6 - Other Types of Equations - 1.6 Exercises - Page 128: 12



Work Step by Step

$27x^3-343=0$ $27x^3=343$ $x^3=\frac{343}{27}$ $x=\sqrt[3] {\frac{343}{27}}=\sqrt[3] {\frac{7^3}{3^3}}$ $x=\frac{7}{3}$ Check the solution: $27(\frac{7}{3})^3-343=27·\frac{343}{27}-343=343-343=0$
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