Answer
There are two real different solutions when D is positive.
Work Step by Step
The discriminant of a quadratic equation $a{{x}^{2}}+bx+c=0$ is:
$D={{b}^{2}}-4ac$
If ${{b}^{2}}-4ac>0$, then there are two real different solutions.
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 11 - Quadratic Functions and Equations - 11.3 Studying Solutions of Quadratic Equations - 11.3 Exercise Set - Page 719: 81
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