The point from which the lengths of tangents to the three circles `x^(2)+y^(2)-4=0`,`x^(2)+y^(2)-2x+3y=0` and `x^(2)+y^(2)+7y-18=0` are equal is

If the lengths of the tangents drawn from a point P to the three circles x^(2)+y^(2)-4=0, x^(2)+y^(2)-2x+3y=0 and x^(2)+y^(2)+7y-18=0 are equal then the co-ordinates of P are

If the lengths of the tanges drawn from a point P to the three circles x^(2)+y^(2)-4=0, x^(2)+y^(2)-2x+3y=0 and x^(2)+y^(2)+7y-18=0 are equal then the co-ordinates of P are

The point from which the tangents to the circles x^(2)+y^(2)-8x+40=0,5x^(2)+5y^(2)-25x+80=0 and x^(2)+y^(2)-8x+16y+160=0 are equal in length,is

Length of tangent from (8,6) to the circle x^(2)+y^(2)-3x-4y+2=0

The length of tangent from (0,0) to the circle x^(2)+y^(2)-14x+12y+25=0

The lengths of the common tangents of the circles x^(2)+y^(2)+4x=0 and x^(2)+y^(2)-6x=0 is