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：2024/11/30 05:46:10
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[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