College Algebra (10th Edition)

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

Chapter 5 - Section 5.4 - Polynomial and Rational Inequalities - 5.4 Assess Your Understanding - Page 373: 21



Work Step by Step

We know that $(x-k)^2\geq0$ for all $k$. $x^3-4x^2=x^2(x-4)$ So here for the inequality to be true, $x-4\gt0\\x\gt4$ and $x^2\ne0\\x\ne0$ So the solution is $x\gt4$.
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