" (4) Find the equation of the circle passing through "(2,1),(5,5),(-6,7)

If the equation of the circle passing through the points (2,1),(5,5),(-6,7) is x^(2)+y^(2)+2gx+2fy+c=0 then c=

The circle passing through (5,-5),(1,7),(-7,1) is

The circle passing through (5,-5),(1,7),(-7,1) is

Find the equation of the circle passing through the points (5,7),(6,6) and (2,-2)

Show that the following sets of points are collinear and find the equation of the line passing through them a. (-5,1)(5,5)(10,7) b. (1,3)(-2,-6)(2,6)

Find the equation of the circle passing through the point: (5,-8),(-2,9) and (2,1)

Find the equation of the circle passing through the points (2,3) , (-2,5) and (0,1)

Find the equation of the circle passing through the points A(-2,7),B(-4,1) and C(4,-5)

Find the equation of the circle passing through the point: (1,2) , (3,-4) and (5,-6) .