If the circle `x^(2)+y^(2)+4x+22y+c=0` bisects the circumference of the circle `x^(2)+y^(2)-2x+8y-d=0` then `c+d`

If the circle x^(2) + y^(2) + 4x + 2y + c = 0 bisects the cirucumference of the cirlce x^(2) + y^(2) -2x -8y -d = 0 then c + d =

If the circle x^(2)+y^(2)+4x+22y+a=0 bisects the circumference of the circle x^(2)+y^(2)-2x+8y-b=0 (where a,b>0) then find the maximum value of (ab).

If the circle x^(2)+y^(2)+4x+22y+a=0 bisects the circumference of circle x^(2)+y^(2)-2x+8y+b=0, then a-b equals to

If the circle x^(2)+y^(2)=4 bisects the circumference of the circle x^(2)+y^(2)-2x+6y+a=0 , then 'a' equals

If the circle x^(2)+y^(2)+2gx+2fy+c=0 bisects the circumference of the circle x^(2)+y^(2)+2g'x+2f'y+c'=0 then prove that 2g'(g-g')+2f'(f-f')=c-c'

If the circle x^2+y^2+4x+22y+l=0 bisects the circumference of the circle x^2+y^2-2x+8y-m=0 , then l+m is equal to

If the circle 3x^(2)+3y^(2)+10x+y-27=0 bisects the circumference of the circle x^(2)+y^(2)=k then k^(2)

If the circle 3x^(2)+3y^(2)+10x+y-27=0 bisects the circumference of the circle x^(2)+y^(2)=k then k^(2)-1=

If the circle x^(2)+y^(2)-2x-2y-1=0 bisects the circumference of the circle x^(2)+y^(2)=1 then the length of the common chord of the circles is