Answer
$x=1 \pm 2\sqrt 2$
Work Step by Step
$(x-1)^{2}=8$
Square root both sides
$(x-1)=\pm \sqrt 8$
Simplify the $\sqrt 8$
$x-1= \pm 2\sqrt 2$
Add one to both sides
$x=1 \pm 2\sqrt 2$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 8 - Sections 8.1-8.3 - Integrated Review - Summary on Solving Quadratic Equations - Page 504: 3
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