A vertical line passing through the point (h, 0) intersects the ellipse $$\frac{x^2}{4} + {y^2}{3} = 1$$ at the points P and Q. Let the tangents to the ellipse at P and Q meet at the point R. If $$\triangle (h)$$ = area of the triangle PQR,
, then $$\frac{8}{\sqrt 5} \triangle_1 - 8 \triangle_2 =$$
Correct Answer: 9
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