#### 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.
$(1\div2)^2=(\frac{1}{2})^2=\frac{1}{4}$

Published by
Pearson

ISBN 10:
0-13417-805-X

ISBN 13:
978-0-13417-805-9

$\frac{1}{4}$

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