(a²-1/a²-2a+1)+(2a-a²/a-2)÷a是怎样算的呢?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 02:18:11
![(a²-1/a²-2a+1)+(2a-a²/a-2)÷a是怎样算的呢?](/uploads/image/z/14282495-71-5.jpg?t=%28a%26%23178%3B%EF%BC%8D1%EF%BC%8Fa%26%23178%3B%EF%BC%8D2a%EF%BC%8B1%29%EF%BC%8B%282a%EF%BC%8Da%26%23178%3B%EF%BC%8Fa%EF%BC%8D2%29%C3%B7a%E6%98%AF%E6%80%8E%E6%A0%B7%E7%AE%97%E7%9A%84%E5%91%A2%3F)
(a²-1/a²-2a+1)+(2a-a²/a-2)÷a是怎样算的呢?
(a²-1/a²-2a+1)+(2a-a²/a-2)÷a是怎样算的呢?
(a²-1/a²-2a+1)+(2a-a²/a-2)÷a是怎样算的呢?
(a^2-1)/(a^2-2a+1)+(2a-a^2)/(a-2)÷a
=(a^2-1)/(a^2-2a+1)-(a^2-2a)/(a-2)÷a
=(a-1)(a+1)/(a-1)^2-a(a-2)/(a-2)÷a
=(a+1)/(a-1)-a÷a
=(a+1)/(a-1)-1
=(a+1-a+1)/(a-1)
=2/(a-1)