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(3*1*1 + 1*1)*sqrt(3*1*1 + 1 - 3*1) + (3*1*1 + 1*1)*sqrt(3*1*1 + 1 - 3*1) / (1*1*1 + 1*1*1)
(3*1*1 + 1*1)*sqrt(3*1*1 + 1 - 3*1) + (3*1*1 + 1*1)*sqrt(3*1*1 + 1 - 3*1) / (1*1*1 + 1*1*1)
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