Answer
See below
Work Step by Step
Obtain: $y=-x^2-8x-20\\y=-[x^2+x+20]\\y=-[x^2+x+16+4]\\y=-(x+4)^2-4$
The vertex is $(-4,-4)$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 9 Quadratic Relations and Conic Sections - 9.5 Graph and Write Equations of Hyperbolas - 9.5 Exercises - Mixed Review - Page 648: 52
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