Question 647492
Find the center and radius of each circle.
#1   (x+2)^2+y^2=16
It's {{{(x-h)^2 + (y-k)^2 = r^2}}}
so h = -2, k = 0, r = 4
--> {{{(x-2)^2 + y^2 = 4^2}}}
Center @ (-2,0), r = 4
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Do these the same way.
#2   (x-1/2)^2+(y-1/2)^2=25
#3   (x-5)^2+y^2=68