Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - Chapter 1 Test Prep - Review Exercises - Page 178: 46

Answer

$-2\pm2i$

Work Step by Step

Step 1. Given $(x+4)(x+2)=2x$, we have $x^2+6x+8=2x\longrightarrow x^2+4x+8=0$, thus $a=1, b=4, c=8$ Step 2. Use the quadratic formula, we have $x=\frac{-4\pm\sqrt {4^2-4(1)(8)}}{2}=\frac{-4\pm\sqrt {-16}}{2}=-2\pm2i$
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.