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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _distance_squared(self, p2: "Point2") -> Union[int, float]: """ Function used to not take the square root as the distances will stay proportionally the same. This is to speed up the sorting process. """

        return (self[0] - p2[0]) ** 2 + (self[1] - p2[1]) ** 2