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

Answer

$b=-5$ 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.
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