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Point M moved on the circle (x - 4)^2 + ...

Point M moved on the circle `(x - 4)^2 + (y - 8)^2 = 20` Then it broke away from it and moving along a tangent to the circle, cuts the x-axis at the point(-2, 0) The co-ordinates of a point on the circle at which the moving point broke away is

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