A. (2, -2) or (-2, 2)

B. (1, -2) or (-2, 1)

C. (-1, 1) or (1, -1)

D. (3, -2) or (-3, 2)

For the circle x^{2}+y^{2}-6x-6y+5=0 the lines 3x+y-2=0, x+7y-11=0 are

The condition that the circles x^{2}+y^{2}+2ax+c=0, x^{2}+y^{2}+2by+c=0 may touch each other is

If the circles described on the line joining the points (0, 1) and (α, β) as diameter cuts the axis of x in points whose abscissa are the roots of the equation x^{2}-5x+3=0, then (α, β)=

The point of intersection of the tangents to the circle passing through (4, 7), (5, 6). (1, 8) at the points where it is cut by the line 5x+y+17=0 is

The centres of the three circles x^{2}+y^{2}-10x+9=0, x^{2}+y^{2}-6x+2y+1=0, x^{2}+y^{2}-9x-4y+2=0 lie on the line