Mark the correct alternatives in each of the following: If the centroid of an equilateral triang...
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0Mark the correct alternatives in each of the following:
If the centroid of an equilateral triangle is \( (1,1) \) and its one vertex is \( (-1,2) \), then the equation of its circumcircle is
(A) \( x^{2}+y^{2}-2 x-2 y-3=0 \)
(B) \( x^{2}+y^{2}+2 x-2 y-3=0 \)
(C) \( x^{2}+y^{2}+2 x+2 y-3=0 \)
(D) none of these
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