The power of `(1,1)` with respect to the circle `x^2+y^2-4x+3y+k=0` is 3 then `k` is

The power of P(1,2) with respect to the circle x^(2)+y^(2)+4x+2y+3=0 is double the power of P with respect to x^(2)+y^(2)+2x+y+k=0 then k=

If the power of (2,1) with respect to the circle 2x^(2)+2y^(2)-8x-6y+k=0 is positive if

A: The polar of (2,3) with respect to the circle x^(2)+y^(2)-4x-6y+5=0" is "2x+3y=0 R: The polar of (x_(1),y_(1)) with respect to the circle S=0" is "S_(1)=0

If 2kx + 3y - 1 = 0 , 2x + y + 5 = 0 are conjugate lines with respect to the circle x^(2) +y^(2) - 2x - 4y - 4 = 0 , t hen k =

If (1,1), (k,2) are conjugate points with respect to the circle x^(2)+y^(2)+8x+2y+3=0 , then k=