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 - Page 575: 83



Work Step by Step

For $\sqrt{12-2x}$ to be a real number, $12-2x$ must be non-negative. $12-2x\geq0$ Add 2x to both sides of the inequality and simplify. $12-2x+2x\geq0+2x$ $12\geq2x$ Divide both sides of the inequality by 2 and simplify. $12\div2\geq2x\div2$ $6\geq x$
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