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 8.1 - Finding Roots - Exercise Set: 79

Answer

$x\leq2$

Work Step by Step

For $\sqrt{2-x}$ to be a real number, $2-x$ must be non-negative. $2-x\geq0$ Add x to both sides of the inequality and simplify. $2-x+x\geq0+x$ $2\geq x$
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