Answer
1
Work Step by Step
The coefficient of x is -2.
Adding the square of half the coefficient creates a perfect square.
$(-2\div2)^2=(-1)^2=1$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 9 - Section 9.2 - Solving Quadratic Equations by Completing the Square - Concept and Vocabulary Check - Page 638: 7
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