Answer
$x=11$ or $x=8$
Work Step by Step
We are given
$x^2-19x+80=-8$
$x^2-19x+88=0$
$(x-11)(x-8)=0$
$x-11=0$ or $x-8=0$
$x=11$ or $x=8$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 9 - Quadratic Functions and Equations - Chapter Test - Page 607: 7
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