The radical centre of the circles
` x^(2) + y^(2) - x + 3y-3 = 0 , x^(2) + y^(2) - 2x + 2y + 2= 0 , x^(2) + y^(2) + 2x +3y - 9 = 0 ` is

The radical centre of the circles x^(2) + y^(2) +1=0 , x^(2) + y^(2) - 2x - 3 = 0 " and " x^(2) + y^(2) - 2y - 3 = 0 is

The radical centre of the circles x^(2) + y^(2) = 1, x^(2) + y^(2) - 2x - 3 = 0 and x^(2) + y^(2) - 2y - 3 = 0 is

The equation of the circle which cuts orthogonally the three circles x^(2) + y^(2) + 4x + 2y + 1 = 0 , 2x^(2) + 2y^(2) + 8x + 6y - 3 = 0 , x^(2) + y^(2) + 6x - 2y - 3 = 0 is

Find the radical centre of the following circles. x^2 + y^2 + 4x - 7 = 0 , 2x^2 + 2y^2 + 3x + 5y - 9 = 0 , x^2 + y^2 + y = 0 .

Find the radical centre of the following circles. x^2 + y^2 + 4x - 7 = 0 , 2x^2 + 2y^2 + 3x + 5y - 9 = 0 , x^2 + y^2 + y = 0 .

Let find the radical and centre of the circles x^2 + y^2 - 2x + 6y = 0 " ___"(1) x^2 + y^2 - 4x - 2y + 6 = 0 " ____"(2) and x^2 + y^2 -12x + 2y + 3 = 0 "___"(3)