college algebra
posted by debbie .
Find the center and radius of the circle
(x+3)^2+(y5)^2=13
I think the center is (3,5)
Radius is (13) but I don't know how to show the work for it.

you are correct as to the center.
The radius is √13
(xh)^2 + (yk)^2 = r^2
is the circle centered at (h,k) with radius r.
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