Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 10 - Review Exercises - Page 816: 9



Work Step by Step

Use standard form of equation of circles; $(x-a)^2+(y-b)^2=r^2$ Here, $r$ defines radius and $(a,b)$ defines center. Then, $x^2+y^2-4x+2y-4=0$ or, $(x^2-4x+4)+(y^2+2y+1)=4+4+1$ or, $(x-2)^2+(y+1)^2=9$
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