If the centroid of an equilateral triangle . (2, - 2) and its one vertex is (-1, 1), then the equation ofcircumcircle is

Circumcircle of the equilateral triangle hascentre at(2, - 2) and passes through(-1, 1). So, its equation is(x−2)2+(y+2)2=(2+1)2+(−2−1)2⇒x2+y2−4x+4y−10=0