Answer
$$q=\frac{-2+\sqrt{30}}{2},\:q=\frac{-2-\sqrt{30}}{2}$$
Work Step by Step
Using the quadratic formula, we find:
$$ q=\frac{-4\pm \sqrt{4^2-4\cdot \:2\left(-13\right)}}{2\cdot \:2} \\ q=\frac{-2+\sqrt{30}}{2},\:q=\frac{-2-\sqrt{30}}{2}$$
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 - 3.2 The Vertex of a Parabola - Exercises and Problems for Section 3.2 - Skill Refresher - Page 127: S10
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