化简:(x2-2x+1)/(x2+1)除以(x-1)/(x2+x)-x

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 09:07:41

化简:(x2-2x+1)/(x2+1)除以(x-1)/(x2+x)-x
化简:(x2-2x+1)/(x2+1)除以(x-1)/(x2+x)-x

化简:(x2-2x+1)/(x2+1)除以(x-1)/(x2+x)-x
错了
x²+1是x²-1
原式=(x-1)²/(x+1)(x-1)*x(x+1)/(x-1)-x
=(x-1)/(x+1)*x(x+1)/(x-1)-x
=x-x
=0