Find the equation of the ellipse whose axes are along the coordinate axes, vertices are `(pm5,0)` and foci at `(pm4,0)`.

Explanation

let the equation of the required ellipse be


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


the coordinates of its vertices and foci are `(pma,0) ` and `(pmae,0)`


vertices and foci are `(pm5,0)` and `(pm4,0)`


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