您好:
x/x²+x+1=1/10
x²+x+1=10x
x²+1=9x
x+1/x=9
(x+1/x)²=9²
x²+2+1/x²=81
x²+1/x²=79
x²/(x^4+x²+1)
=1/(x²+1+1/x²)
=1/(79+1)
=1/80
不明白,可以追问如有帮助,记得采纳,谢谢
祝学习进步!
您好:
x/x²+x+1=1/10
x²+x+1=10x
x²+1=9x
x+1/x=9
(x+1/x)²=9²
x²+2+1/x²=81
x²+1/x²=79
x²/(x^4+x²+1)
=1/(x²+1+1/x²)
=1/(79+1)
=1/80
不明白,可以追问如有帮助,记得采纳,谢谢
祝学习进步!