Answer
See below.
Work Step by Step
We can distinguish between them by looking at the operator sign, which in case of a hyperbola is negative and in case of an ellipse is positive.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 7 - Conic Sections - Exercise Set 7.2 - Page 687: 72
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