|((2 + 6 x) (2 - x + x^2 + x^3))/(-1 + 2 x + 3 x^2)^2 |< 1|((2 + 6 x) (2 - x + x^2 + x^3))/(-1 + 2 x + 3 x^2)^2 |< 1

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