if p and q are lengrhs of the line segment
of any focal chord of parabola y^2 =4ax.
where p,q are the roots of the equation
(5+^ (√)2 )x^2 −(4+(√5))x+(4+(√)5)=0 then the
length of the semi letusrectum of the parabola
is
ans:2
if r_1 andr_(2 ) are the radii of smallest and
largest circles which passes through
(5,6)and touches the circle x^2 +y^2 −4x=0
then r_1 r_2 =
ans:((41)/4)