[Bug] 幂运算
>> (48/6)^(1/2)+(3)^(1/2)
in> (48/6)^(1/2)+(3)^(1/2)
out> (8^(1*sqrtn(1,2)+2)*sqrtn(3,2))|2)*sqrtn(1,2)
------------------------
>> (48/6)^(1/2)+(3)^(1/2)
in> (48/6)^(1/2)+(3)^(1/2)
out> (8^(1*sqrtn(1,2)+2)*sqrtn(3,2))|2)*sqrtn(1,2)
------------------------