1/2√0.25-1/3√0.36

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1/2√0.25-1/3√0.361/2√0.25-1/3√0.361/2√0.25-1/3√0.361/2√0.25-1/3√0.36=1/2×0.5-1/3×0.6=1/4-1/5=1/20

1/2√0.25-1/3√0.36
1/2√0.25-1/3√0.36

1/2√0.25-1/3√0.36
1/2√0.25-1/3√0.36=1/2×0.5-1/3×0.6=1/4-1/5=1/20