Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 8 - Section 8.2 - The Quadratic Formula - Exercise Set - Page 607: 28

Answer

Discriminant: $-80$; Roots/solutions: Two imaginary numbers which will be complex conjugates of one another.

Work Step by Step

Let us determine the discriminant of the quadratic equation $5x^2+4=0$ which can be calculated as: $D=b^2-4ac=(0)^2-(4)(5)(4)=-80$ This implies that $D$ represents a negative real number and with solution of two imaginary numbers. Hence, our answer is: Discriminant: $-80$; Roots/solutions: Two imaginary numbers which will be complex conjugates of one another.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.