计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)²】²
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计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)²】²计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)
计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)²】²
计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)²】²
计算:【-6(x+y)²(x—y)³】÷【3(x+y)(x—y)²】²
[-6(x+y)^2(x-y)^3]/[3(x+y)(x-y)^2]^2
=-2/[3(x-y)]