Answer :

Okay, here we have this:

(x-a)²+(y-b)²=r² is the equation of the circle with radius r and with center at (a, b), then: We are going to rewrite the equation to the form of the ordinary equation of the circumference:

(x-3)²+(y-(-1))²=5²

Therefore the properties of the circle are:

(a,b)=(3,-1) and r=5.

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