(x-y)/(x根号y-y根号x)求 分母有理化
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(x-y)/(x根号y-y根号x)求分母有理化(x-y)/(x根号y-y根号x)求分母有理化(x-y)/(x根号y-y根号x)求分母有理化原式=(x-y)(x√y+y√x)/(x√y+y√x)(x√y
(x-y)/(x根号y-y根号x)求 分母有理化
(x-y)/(x根号y-y根号x)求 分母有理化
(x-y)/(x根号y-y根号x)求 分母有理化
原式=(x-y)(x√y+y√x)/(x√y+y√x)(x√y-y√x)
=(x-y)(x√y+y√x)/(x²y-xy²)
=(x-y)(x√y+y√x)/[xy(x-y)]
=(x√y+y√x)/(xy)
(x-y)/(x√y-y√x)
=(x-y)(x√y+y√x)/[(x√y+y√x)(x√y-y√x)]
=(x-y)(x√y+y√x)/[(x√y)²-(y√x)²]
=(x-y)(x√y+y√x)/(x²y-xy²)
=(x-y)(x√y+y√x)/xy(x-y)
=(x√y+y√x)/xy
（(x^2)根号y+xy根号x-xy根号y-（y^2）根号x）/（(x^2)y-(y^2)x）
分子分母同时乘以 x根号y+y根号x
化简:(根号X/Y)+(根号y/x)
化简(x-y)/(根号x+根号y)
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