Answer
See below.
Work Step by Step
In the equation we add $(\frac{4}{2})^2=4$ to both sides to complete the square on $x$ and we add $(\frac{8}{2})^2=16$ to both sides to complete the square on $y$.
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 10.1 - Distance and Midpoint Formulas; Circles - Concept and Vocabulary Check - Page 764: 6
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