Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 9 Quadratic Relations and Conic Sections - 9.3 Graph and Write Equations of Circles - 9.3 Exercises - Mixed Review - Page 632: 82

Answer

$$c=12,\:c=-12$$

Work Step by Step

Solving the equation using the rules of Algebra, we find: $$c^2=400-256 \\ c^2=144\\ c=\sqrt{144},\:c=-\sqrt{144}\\ c=12,\:c=-12$$
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