Answer
$\pm 1$
Work Step by Step
$x^{4}-2x^{2}+1=0$
$x^{4}-x^{2}-x^{2}+1=0$
$(x^{4}-x^{2})+(-x^{2}+1)=0$
$x^{2}(x^{2}-1)-1(x^{2}-1)=0$
$(x^{2}-1)(x^{2}-1)=0$
$x^{2}-1=0$
$x=\pm 1$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.5 - Solving Polynomial Equations - Exercises - Page 30: 28
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
