1:√2/3+3√1/6-1/2√54

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1:√2/3+3√1/6-1/2√54
1:√2/3+3√1/6-1/2√54

1:√2/3+3√1/6-1/2√54
原式=(√6)/3+3(√6)/6-1/2×3√6
=(1/3+1/2-3/2)×√6
=-2(√6)/3

√2/3+3√1/6-1/2√54
=√6/3+√6/2-3√6/2
=﹣2√6/3.