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(17 + Sqrt[-54])^(1/3) - 1/2 (1 + 3 Sqrt[2] + Sqrt[-3] (Sqrt[2] - 1))
(17 + Sqrt[-54])^(1/3) - 1/2 (1 + 3 Sqrt[2] + Sqrt[-3] (Sqrt[2] - 1))
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