Find the centre of the circle `3x^2+3y^2-6x-12y-2=0`

Find the centre of the circle x^2+y^2+2x+2=0

Find the equation of the circle with centre at (1,-2) and passing through the centre of the circle x^2+y^2-4x+1=0

Find the centre and radius of the circle x^2+y^2-10x+4y+1=0

Prove that the centres of the circles x^2+y^2=1 , x^2+y^2+6x-2y-1=0 and x^2+y^2-12x+4y=1 are collinear

Find the length of the chord of the circle x^2+y^2+6x-2y-1=0 intercepted by x - axis.

Find the centre and the radius of the circle x^2+y^2+8x+10y-8=0

If one of the diameters of the circle x^2+ y^2-2x-6y + 6=0 is a chord to the circle with centre (2, 1), then the radius of the circles is :

Find the centre and radius of the circle x^(2)+y^(2)-4x-8y-45=0 ?

Find the centre and radius of the circle x^(2) + y^(2) + 8x + 10y - 8 = 0