3/2根号20×(-1/3根号48)÷根号2又2/3

问题描述:

3/2根号20×(-1/3根号48)÷根号2又2/3
3Q

3/2根号20×(-1/3根号48)÷根号2又2/3
=-3√5x4/3√3÷2√2/3
=-4√15÷2√2/3
=-2√45/2
=-√90
=-3√10
如果本题有什么不明白可以追问,