x^(m/n)表示x的m次方在开n次方根
所以2√3*立方根号下1.5*六次方根号下12
=2*3^(1/2)*(3/2)^(1/3)*12^(1/6)
=2*3^(1/2)*3^(1/3)*2^(-1/3)*(2^2)^(1/6)*3^(1/6)
=2^(1-1/3+1/3)*3^(1/2+1/3+1/6)
=2*3=6
=2*3^(1/2)+(1.5)^(1/3)+16^(1/6)
=2*3^(1/2)+1.5^(1/3)+(2^4)^(1/6)
=2*3^(1/2)+(1.5)^(1/3)+2^(2/3)
=(2x1.732)+ 1.1447 + 1.5874
= 3.464 + 1.1447 + 1.5874
= 6.3781