[Solved] Let the line x - y = 4 intersect the circle C: (x - 4)^2 + (y + 3)^2 = 9 at the points Q and R. If P(\\alpha, \\beta) is a point on C such that PQ = PR, then (6\\alpha + 8\\beta)^2 is equal to __________. - - NTA JEE Mains 6th April Shift 2 2026