a/a+2-1/a-1÷a+2/a²-2a+1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 21:32:10
![a/a+2-1/a-1÷a+2/a²-2a+1](/uploads/image/z/1025019-27-9.jpg?t=a%2Fa%2B2-1%2Fa-1%C3%B7a%2B2%2Fa%26%23178%3B-2a%2B1)
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a/a+2-1/a-1÷a+2/a²-2a+1
a/a+2-1/a-1÷a+2/a²-2a+1
a/a+2-1/a-1÷a+2/a²-2a+1
a/a+2-1/a-1÷a+2/a²-2a+1
=a(a-1)/(a²-2a+1)-(a+2)/(a²-2a+1)÷a+2/a²-2a+1
=a²-a-a-2/a+2
=a²-2/a+2