3√xy分之2√x²y

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3√xy分之2√x²y3√xy分之2√x²y3√xy分之2√x²y2√x²y/3√xy=2/3*√(x²y/xy)=2/3*√x=2√x/3

3√xy分之2√x²y
3√xy分之2√x²y

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