Answer
$t=15, -11$
Work Step by Step
$t^2-4t-165=0$
$t^2-4t-165+(4/2)^2=0+(4/2)^2$
$t^2-4t+4-165 = 4$
$(t-2)^2-165 =4$
$(t-2)^2-165+165 =4+165$
$(t-2)^2 = 169$
$\sqrt {t-2}^2 =\sqrt {169}$
$t-2 = 13$ or $t-2 = -13$
$t=15, -11$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 9 - Quadratic Functions and Equations - 9-5 Completing the Square - Lesson Check - Page 564: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
