Answer
$\frac{1}{4}$
Work Step by Step
The coefficient of x is 1.
Adding the square of half the coefficient creates a perfect square.
$(1\div2)^2=(\frac{1}{2})^2=\frac{1}{4}$
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: 8
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