def METHOD_NAME(self):
    """Fateman's GCD benchmark: trivial GCD."""
    gens = self.gens
    x, y = gens[0:2]
    return ((1 + sum(gens))*(2 + sum(gens)),
            (1 + sum(_**2 for _ in gens))*(-3*y*x**2 + y**2 - 1),
            self.one)