4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 17:40:48
![4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)](/uploads/image/z/6127935-15-5.jpg?t=4y%26%23178%3B-4y%2Fy%26%23178%3B-2y%2B1%C3%B7%28y%2B1%2Fy-1-y-1%2Fy%2B1%29%C3%B7%283y%2B3%29)
4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)
4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)
4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)
4y²-4y/y²-2y+1÷(y+1/y-1-y-1/y+1)÷(3y+3)
=4y(y-1)/y(y-2)÷【(y+1)²-(y-1)²】/(y+1)(y-1)÷3(y+1)
=4(y-1)²/3(y-2)÷4y
=(y-1)²/3y(y-2)
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