college algebra

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

  • college algebra -

    you are correct as to the center.
    The radius is √13

    (x-h)^2 + (y-k)^2 = r^2

    is the circle centered at (h,k) with radius r.

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