19/06/30 03:52:13.16 L2yw+E2Z0.net BE:487816701-PLT(12060)
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1/12((28(1+3*3^0.5i))^(1/3)+(28(1-3*3^0.5i))^(1/3)-2+(84+4*(28(1+3*3^0.5i))^(1/3)+4*(28(1-3*3^0.5i))^(1/3)-2*(98(-13+3*3^0.5i))^(1/3)-2*(98(-13-3*3^0.5i))^(1/3))^0.5i)=e^(2iπ/7≒0.6235+0.78183i
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