Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 9 - Review Exercises - Page 1036: 44



Work Step by Step

From the given equation, we have $A=5,B=-8, C=7$. Evaluate $B^2-4AC=64-4(5)(7)=-76\lt0$. Thus the equation indicates an ellipse (including a circle).
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