根号32x³y(x≥0,y≥0 )根号8x³+4x²y(x≥0,2x+y≥0 )计算3根号5×2根号10根号4分之3×(-根号2又3分之2)×根号56

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根号32x³y(x≥0,y≥0)根号8x³+4x²y(x≥0,2x+y≥0)计算3根号5×2根号10根号4分之3×(-根号2又3分之2)×根号56根号32x³y

根号32x³y(x≥0,y≥0 )根号8x³+4x²y(x≥0,2x+y≥0 )计算3根号5×2根号10根号4分之3×(-根号2又3分之2)×根号56
根号32x³y(x≥0,y≥0 )
根号8x³+4x²y(x≥0,2x+y≥0 )
计算
3根号5×2根号10
根号4分之3×(-根号2又3分之2)×根号56

根号32x³y(x≥0,y≥0 )根号8x³+4x²y(x≥0,2x+y≥0 )计算3根号5×2根号10根号4分之3×(-根号2又3分之2)×根号56
根号32x³y(x≥0,y≥0 )
=√[(4x)²×2xy]
=4x√(2xy)
根号8x³+4x²y(x≥0,2x+y≥0 )
=√[(2x)²(2x+y)]
=2x√(2x+y)
计算
3根号5×2根号10
=6√50
=30√2
根号4分之3×(-根号2又3分之2)×根号56
=-√(3/4x8/3x56)
=-√112
=-4√7