八年级分式的乘除法(x²-4y²)/(x²+6xy+9y²)÷(2y²-xy)/(x+2y) (a+b)/(a²-b²)·(a²-2ab+b²)/(ab)(x+y)²/(xy-y²)·(y-x)²/(xy+y²)

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八年级分式的乘除法(x²-4y²)/(x²+6xy+9y²)÷(2y²-xy)/(x+2y)   (a+b)/(a²-b²)·(a²-2ab+b²)/(ab)(x+y)²/(xy-y²)·(y-x)²/(xy+y²)
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八年级分式的乘除法(x²-4y²)/(x²+6xy+9y²)÷(2y²-xy)/(x+2y) (a+b)/(a²-b²)·(a²-2ab+b²)/(ab)(x+y)²/(xy-y²)·(y-x)²/(xy+y²)
八年级分式的乘除法
(x²-4y²)/(x²+6xy+9y²)÷(2y²-xy)/(x+2y)  
 (a+b)/(a²-b²)·(a²-2ab+b²)/(ab)
(x+y)²/(xy-y²)·(y-x)²/(xy+y²)

八年级分式的乘除法(x²-4y²)/(x²+6xy+9y²)÷(2y²-xy)/(x+2y) (a+b)/(a²-b²)·(a²-2ab+b²)/(ab)(x+y)²/(xy-y²)·(y-x)²/(xy+y²)
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