3√xy分之2√x²y .

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3√xy分之2√x²y.3√xy分之2√x²y.3√xy分之2√x²y.=(2*√x*√(xy))/(3√(xy))=2√x/3

3√xy分之2√x²y .
3√xy分之2√x²y .

3√xy分之2√x²y .
=(2*√x*√(xy))/(3√(xy))
=2√x/3