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(4*(sqrt(5)+sqrt(2)+2)*(3-2*sqrt(10)))/31=(-4*(sqrt(5)-sqrt(2)+2)*(4*sqrt(2)+1))/31
(4*(sqrt(5)+sqrt(2)+2)*(3-2*sqrt(10)))/31=(-4*(sqrt(5)-sqrt(2)+2)*(4*sqrt(2)+1))/31
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