Algebra 1: Common Core (15th Edition)

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


$t=15$ 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 $t=-11$
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