作业帮[x-(x+1分之2x)]÷x²-1分之x²-2x+1
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/27 22:06:30
![[x-(x+1分之2x)]÷x²-1分之x²-2x+1](/uploads/image/z/1644859-19-9.jpg?t=%5Bx-%28x%2B1%E5%88%86%E4%B9%8B2x%29%5D%C3%B7x%26%23178%3B-1%E5%88%86%E4%B9%8Bx%26%23178%3B-2x%2B1)
[x-(x+1分之2x)]÷x²-1分之x²-2x+1
[x-(x+1分之2x)]÷x²-1分之x²-2x+1
[x-(x+1分之2x)]÷x²-1分之x²-2x+1
[x-(x+1分之2x)]÷x²-1分之x²-2x+1
＝[x-(2x/x+1)]×[(x+1)(x-1)/(x-1)²]
＝[(x²-x)/(x+1)]×[(x+1)/(x-1)]
＝[x(x-1)/(x+1)]×[(x+1)/(x-1)]
＝x