Let the tangents at the points P and Q on the ellipse x^2/2 + y^2/4 = 1

Question

Let the tangents at the points P and Q on the ellipse \(\frac{x^2}{2}+\frac{y^2}{4}= 1\) meet at the point R (√2,2√2-2).

If S is the focus of the ellipse on its negative major axis, then SP² + SQ² is equal to

Answer 1

Correct answer is 13

Ellipse is