分式方程(x²-1/x²-2x+1*x-1/x²+x)+2/x

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/26 01:41:50

分式方程(x²-1/x²-2x+1*x-1/x²+x)+2/x


[(x²-1)/(x²-2x+1)×(x-1)/(x²+x)]+2/x
=[(x-1)(x+1)/(x-1)²×(x-1)/x(x+1)]+2/x
=[(x+1)/(x-1)×(x-1)/x(x+1)]+2/x
=1/x+2/x
=3/x