(6又1/4)的2/3次幂

问题描述:

(6又1/4)的2/3次幂

(6又1/4)的2/3次幂
=(25/4)的2/3次幂
=³√(25/4)²
=³√(625/16)
=5/2³√5/2
=5/8(³√20)