Answer
-1, -6
Work Step by Step
Using the quadratic formula, we find:
$$\frac{-7+\sqrt{7^2-4\cdot \:1\cdot \:6}}{2\cdot \:1}\\ x=-1,-6$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 3 - Quadratic Functions - 3.1 Introduction to the Family of Quadratic Functions - Exercises and Problems for Section 3.1 - Skill Refresher - Page 120: S9
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