Find the equation of the ellipse with foci at `(+-5,0)` and x=`36/5` as one of the directrices.

Explanation

`(-ae,0)`and`(ae,0)`

`ae=5+11`

`a/e=36/5`

`a^2=36`

`a=pm6`

`6*e=5`

`e=5/6`

`x^2/a^2+y^2/b^2=1`

...