Answer
16
Work Step by Step
$x^2+8x$
$x^2+8x+(8/2)^2$
$x^2+8x+4^2$
$x^2+8x+16$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 11 - Section 11.5 - Quadratic Functions and Their Graphs - Exercise Set - Page 811: 41
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