Mathematics - Ellipse Question with Solution | TestHub

Let $f(x)=x^2+9,g(x)=\frac{x}{x-9}$ and $\mathrm{a}=f\circ g(10),\mathrm{b}=g\circ f(3)$. If $\mathrm{e}$ and $l$ denote the eccentricity and the length of the latus rectum of the ellipse $\frac{x^2}{a}+\frac{y^2}{b}=1$, then $8{\mathrm{e}}^2+l^2$ is equal to.