Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Section 8.2 - Solving Quadratic Equations by the Quadratic Formula - Vocabulary, Readiness & Video Check: 3


$b=-5$ and $c=-7$

Work Step by Step

If $ax^{2}+bx+c=0$ and $5x^{2}-5x-7=0$, then $a=5$, $b=-5$, and $c=-7$. In the quadratic equation all the coefficients and constant term are positive. Thus the problem $5x^{2}-5x-7=0$, would look like $5x^{2}+(-5x)+(-7)=0$, This will give you negative values for b and c.
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.