Answer
A={$ax^{2}+bx+c=0|b²-4ac\lt0┊$}
Work Step by Step
The equation $ax^{2}+bx+c=0$ has complex roots; if the value of the discriminant $b^{2}-4ac$ is negative:
A={$ax^{2}+bx+c=0|b²-4ac\lt0┊$}
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
by Larsen, Richard J.; Marx, Morris L.
Published by
Pearson
ISBN 10:
0-13411-421-3
ISBN 13:
978-0-13411-421-7
Chapter 2 Probability - 2.2 Sample Spaces and the Algebra of Sets - Questions - Page 19: 12
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