Answer
$t=15$ or $t=-11$
Work Step by Step
$t^2-4t-165=0$
$t^2-2.x.2+4 -169=0$
$(t-2)^2=169$
$(t-2)^2=(13)^2$
$t-2=\pm 13$
$t-2=13$ or $t-2=-13$
$t=15$ or $t=-11$
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 - 9-5 Completing the Square - Lesson Check - Page 579: 2
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