Answer
Fill the blank with:
$\displaystyle \frac{-b\pm\sqrt{b^{2}-4ac}}{2a}$
Work Step by Step
The equation for the quadratic formula is
$x=\displaystyle \frac{-b\pm\sqrt{b^{2}-4ac}}{2a}$
You can find it in the text just before example 10.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.7 - Equations - Concept and Vocabulary Check - Page 105: 17
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