Answer
$x=-1\pm\sqrt2$
Work Step by Step
$-x^2-2x+1=0\\x^2+2x-1=0\\x^2+x+x+1-2=0\\x^2+x+x+1=2\\x(x+1)+1(x+1)=2\\(x+1)^2=2\\x+1=\pm\sqrt2\\x=-1\pm\sqrt2$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 2 - Functions and Graphs - Exercise Set 2.8 - Page 321: 99
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