Find the equation of the circle centered on the circle x^(2)+y^(2)+2x+4y=0 which passes through the point (3,2). , ,

find the equation of the tangents to the circle x^(2)+y^(2)-2x-4y-20=0 which pass through the point (8,1)

Find the equation of the circle concentric with the circle x^(2)+y^(2)-8x+6y-5=0 and passing through the point (-2,-7),

Find the equation of the circle concentric with the circle x^2 +y^2 - 4x - 6y-9=0 and passing through the point (-4, -5)

Equation of the circle concentric with the circle x^(2)+y^(2)-3x+4y-c=0 and passing through the point [(-1,-2) is

Find the equation of the circle concentric with the circle x^(2) + y^(2) + 4x + 4y + 11 = 0 and passing through the point ( 5, 4).

Find the equation of the circle concentric With the circle x^(2) + y^(2) - 4x - 6y - 9 = 0 and passing through the point ( -4, -5).

Equation of the smaller circle that touches the circle x^(2)+y^(2)=1 and passes through the point (4,3) is

Find the equation of the circle which cuts orthogonally the circle x^(2)+y^(2)6x+4y-3=0, passes through (3,0) and touches the axis of y.