Answer
ellipse
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).
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 9 - Review Exercises - Page 1036: 44
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