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
答
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
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