若x满足x²-5x-1=0,则x-1/x=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 15:11:45
![若x满足x²-5x-1=0,则x-1/x=?](/uploads/image/z/2988150-6-0.jpg?t=%E8%8B%A5x%E6%BB%A1%E8%B6%B3x%26%23178%3B-5x-1%3D0%2C%E5%88%99x-1%2Fx%3D%3F)
x){ѽ/mPS64555y1ЯI*'J~
&ɂŞXbΗ3<ٽ
``-~qAbf0Χ{QLkdH zj
若x满足x²-5x-1=0,则x-1/x=?
若x满足x²-5x-1=0,则x-1/x=?
若x满足x²-5x-1=0,则x-1/x=?
x²-5x-1=0,
两边除以x得
x -5 -1/x=0
∴x -1/x=5
等式两边除以x
x-5-1/x=0
x-1/x=5