Find the equation of the circumcircle of the triangle formed by the points (2,-8) (7,1) (-1,-2)
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An equation for the circumcircle in trilinear coordinates x : y : z is a/x + b/y + c/z = 0. An equation for the circumcircle in barycentric coordinates x : y : z is a2/x + b2/y + c2/z = 0.
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