Answer
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Work Step by Step
The equation of an ellipse should be the sum of two squared terms, while the equation of a hyperbola should be the difference of two squared terms involving $x$ and $y$.
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 - Section 9.2 - The Hyperbola - Exercise Set - Page 983: 72
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