化简(x平方-2x+1分之x²-1+x+1分之1-x)除以x-1分之x的结果是多少?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 05:29:36
![化简(x平方-2x+1分之x²-1+x+1分之1-x)除以x-1分之x的结果是多少?](/uploads/image/z/670043-11-3.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%88x%E5%B9%B3%E6%96%B9-2x%2B1%E5%88%86%E4%B9%8Bx%26%23178%3B-1%2Bx%2B1%E5%88%86%E4%B9%8B1-x%EF%BC%89%E9%99%A4%E4%BB%A5x-1%E5%88%86%E4%B9%8Bx%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF%E5%A4%9A%E5%B0%91%3F)
化简(x平方-2x+1分之x²-1+x+1分之1-x)除以x-1分之x的结果是多少?
化简(x平方-2x+1分之x²-1+x+1分之1-x)除以x-1分之x的结果是多少?
化简(x平方-2x+1分之x²-1+x+1分之1-x)除以x-1分之x的结果是多少?
原式={[(x+1)(x-1)]/(x-1)^2+(1-x)/(x+1)}÷x/(x-1)=[(x+1)/(x-1)-(x-1)/(x+1)] × x/(x-1)
=4x/(x-1)(x+1) × x/(x-1)=4/(x+1)