相当于9^(2/3)*27^(1/2)/3^(1/6)
=(3^2)^(2/3)*(3^3)^(1/2)/3^(1/6)
=3^(4/3)*3^(3/2)/3^(1/6)
=3^(4/3+3/2-1/6)
=3^(16/6)
=3^(8/3)
即3的8次方再开3次方
相当于9^(2/3)*27^(1/2)/3^(1/6)
=(3^2)^(2/3)*(3^3)^(1/2)/3^(1/6)
=3^(4/3)*3^(3/2)/3^(1/6)
=3^(4/3+3/2-1/6)
=3^(16/6)
=3^(8/3)
即3的8次方再开3次方