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等等,我寫出來,寫根號很麻煩,先占位=(3+3√3)分之√3 *(3√2*2√2-3√2*3√2)=3+3√3)分之-6√3(√18+√32)分之3√2=3√2+4√2=7√23+3√3)分之-6√3*7√2=1+√3分之-14√6分子分母同時乘以1-√3=7√6-21√…
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