If the line passing through P=(8,3) meets the circle `S-=x^(2)+y^(2)-8x-10y+26=0` at A,B then PA.PB=

If a line through P(-2,3) meets the circle x^(2)+y^(2)-4x+2y+k=0 at A and B such that PA.PB=31 then the radius of the circles is

If a line through P(-2,3) meets the circle x^(2)+y^(2)-4x+2y+k=0 at A and B such that PA.PB=31 then the radius of the circles is

If a line through P(-2,3) meets the circle x^(2)+y^(2)-4x+2y+k=0 at A and B such that PA.PB =31 then the radius of the circle is

If a line with positive alope passing through P(0,1) intersects the curve y=x^(2)-x at A=P that PA.PB=2, then AB is

Find the equation of the circle passing through the centre of the circle x^(2)+y^(2)+8x+10y-7=0 and concentric with the circle x^(2)+y^(2)-4x-6y=0

If (1+ax)^n = 1 + 8x + 24x^2 + … and a line through P(a, n) cuts the circle x^2 + y^2 = 4 in A and B , then PA.PB =

If (1+ax)^n = 1 + 8x + 24x^2 + … and a line through P(a, n) cuts the circle x^2 + y^2 = 4 in A and B , then PA.PB =