[25^(1/3)-125^(1/2)]/5^(1/4)
=[5^(2/3)-5^(3/2)]/5^(1/4)
=5^(2/3-1/4)-5^(3/2-1/4)
=5^(5/12)-5^(5/4)
剩下的只能用计算器了
注：x^y的意思是x的y次方