The distance between directrix of the ellipse `(4x-8)^(2)+16y^(2)=(x+sqrt(3)y+10)^(2)` is

The distance between the directrices of the ellipse (4x-8)^(2)+16y^(2)=(x+sqrt(3y)+10)^(2) is k,then (k)/(2) is

Distance between the foci of the ellipse 25x^(2)+16y^(2)+100x-64y-236=0 is

find the equation the directrix of given ellipse x^(2) + 16y^(2) = 16

Equation of a directrix of the ellipse x^2/36+y^2/4=1 is

The distance between the focus and the directrix of the conic (sqrt(3x)-y)^(2)=48(x+sqrt(3)y) is :

The eccentricity of the ellipse x^(2)+4y^(2)+2x+16y+13=0 is

The distance between the vertex and corresponding focus of the ellipse 25x^(2)+16y^(2)=400 is