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x-y/(z-x)(z-y) 一y-z/(x-y)(x-z) +z-x/(y-z)(y-x)

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x^-(y-z)^/(x+y)^-z^

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(x+y-z)(x-y+z)=

(x+y-z)(x-y+z)=(x+y-z)(x-y+z)=(x+y-z)(x-y+z)=[x+(z-y)][x-(z-y)]=x-(z-y)记得采纳啊

x+y>z 0

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(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什么?(x+y+z)(-x+y+z)(x-y+z)(x+y-z)等于什

(x-y+z)²

(x-y+z)²(x-y+z)²(x-y+z)² 

(x+y-z)*(x+y-z)-(x-y+z)*(x-y-z)等于多少

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