College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 1 - Section 1.4 - Radical Equations; Equations Quadratic in Form; Factorable Equations - 1.4 Assess Your Understanding: 42

Answer

$x=0$ or $x=81$

Work Step by Step

We solve by factoring: $x^{3/4}-9x^{1/4}=0$ $x^{1/4}(x^{1/2}-9)=0$ $x^{1/4}=0$ or $x^{1/2}=9$ $x=0^4$ or $x=9^2$ $x=0$ or $x=81$
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