√2/45 ÷ 3/2 √1 3/5

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√2/45 ÷ 3/2 √1 3/5
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√2/45 ÷ 3/2 √1 3/5
√2/45 ÷ 3/2 √1 3/5

√2/45 ÷ 3/2 √1 3/5
1原式=根号((2/45)*(5/8))*2/3=根号(1/36)*2/3=1/9
2原式=根号((5根号2+2根号5)*(5根号2-2根号5))=根号(50-20)=根号30