Yahoo! answer

Hi!
Here's the solution:

The equation can be written as:

(x - 2)^2 + (y - 1)^2 = (5)^2
A circle's equation is
(x - a)^2 + (y - b)^2 = (r)^2, where (a, b) is the center and r is the radius

So, center is (2, 1) and radius is 5. => D

Hope it helps.

Good luck!!!

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