Answer
See below.
Work Step by Step
An ellipse is the set of all points on the plane such that the sum of the distances of each point to two fixed points (foci) is constant.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 10 - Section 10.2 - The Ellipse - Exercise Set - Page 779: 47
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