If 1, u, ū, g, ug are free and u·R(u)·g = N(u) with R ≠ 0, deg R ≤ 2, deg N ≤ 3, their span contains u², ū² or some 1/(u − a)

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If 1, u, ū, g, ug are free and u·R(u)·g = N(u) with R ≠ 0, deg R ≤ 2, deg N ≤ 3, their span contains u², ū² or some 1/(u − a) · Prove2Me