若x=1/x,则(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)的值是
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 14:17:43
![若x=1/x,则(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)的值是](/uploads/image/z/1768041-9-1.jpg?t=%E8%8B%A5x%3D1%2Fx%2C%E5%88%99%28x%26%23178%3B2-6x%2B9%29%2F%28x-3%29%C3%B7%28x%2B3%29%2F%EF%BC%88x%26%23178%3B%2B6x%2B9%EF%BC%89%E7%9A%84%E5%80%BC%E6%98%AF)
x){ѽPBiL
5eCsk#]
mKM}
]c5*5Jkd|>iÞg3$S ;* l
Qfk1V%[1i k!Mi{AB4X`mu
uT"CT?]lޜgsּ\4ٜ'xٌ3>_dNF 1 SԀ
若x=1/x,则(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)的值是
若x=1/x,则(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)的值是
若x=1/x,则(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)的值是
x=1/x
x²=1
x=1或x=-1
(x²2-6x+9)/(x-3)÷(x+3)/(x²+6x+9)
=(x-3)²/(x-3)÷(x+3)/(x+3)²
=(x+3)/(x-3)
x=1时 原式=(1+3)/(1-3)=-2
x=-1时 原式=(-1+3)/(-1-3)=-1/2
如果本题有什么不明白可以追问,