(chatquestion)...The curves x^(2) +y^(2) +6x - 24y +72 = 0 and x^(2) - y^(2) +6x +16y - 46 = 0 intersect in four points P,Q,R and S lying on a parabola. Let A be the focus of the parabola, then AP+AQ+AR+AS=?

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