2/3√20 乘以 (-√15)÷(-3/1√48)怎么做啊

问题描述:

2/3√20 乘以 (-√15)÷(-3/1√48)怎么做啊

3/2*√20 乘以 (-√15)÷(-√48/3)
=3√5*√15÷4√3/3
=15√3x3/4√3
=45/4