作业帮[-xy/(x-y)²]²×(y²-xy/x)³
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/24 17:15:40
![[-xy/(x-y)²]²×(y²-xy/x)³](/uploads/image/z/2668899-3-9.jpg?t=%5B-xy%2F%28x-y%29%26%23178%3B%5D%26%23178%3B%C3%97%28y%26%23178%3B-xy%2Fx%29%26%23179%3B)
[-xy/(x-y)²]²×(y²-xy/x)³
[-xy/(x-y)²]²×(y²-xy/x)³
[-xy/(x-y)²]²×(y²-xy/x)³
原式=x²y²/(x-y)^4×[-y³(x-y)³]/x³
=-y^5/[x(x-y)]
=-y^5/(x²-xy)
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来源：学生作业帮助网 编辑：作业帮 时间：2024/04/24 17:15:40
[-xy/(x-y)²]²×(y²-xy/x)³
[-xy/(x-y)²]²×(y²-xy/x)³
[-xy/(x-y)²]²×(y²-xy/x)³
原式=x²y²/(x-y)^4×[-y³(x-y)³]/x³
=-y^5/[x(x-y)]
=-y^5/(x²-xy)