Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.5 - Equations - 1.5 Exercises: 5

Answer

A. $\sqrt 2x = -x$ B. $\ 2x = x^2$ C. $\ x = 2, x = 0$ D. $\ x = 0$

Work Step by Step

Letter A asks to isolate the radical, therefore you must subtract the "x" to the other side. Letter B asks to square both sides. Squaring a radical leaves what's left inside the radical. For letter C, subtract "2x" to the other side and from there, you will have an equation to solve. "x" will equal 2 and 0. For letter D, plug in both solutions, however, only 0 will make the statement true.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.