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=(√3¹¹/3¹¹ + √3⁴/3⁴)(√3¹¹/3¹¹ - 1/3²)=
=[(√3¹¹*3⁴+√3⁴*3¹¹)/3¹⁵][(√3⁴*3²-3¹¹)/3¹³]=
=[(√3¹¹+√3⁴*3⁷)/3¹¹][(√3⁴-3⁹)/3¹¹]=
=(√3²³-3²⁰)/3¹²¹