> 数学 >
已知x2-3x+1=0,则
x2
x4+3x2+1
=______.
人气:293 ℃ 时间:2019-08-29 10:55:31
解答
∵x2-3x+1=0,
∴x+
1
x
=3,
x2
x4+3x2+1
=
1
x2+3+
1
x2
=
1
(x+
1
x
)
2
+1
=
1
10

故答案为
1
10
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版