解方程x눀-4x+1=0如何解??

2025-03-16 18:23:18
推荐回答(5个)
回答1:

x1=2+√3或 x2=2-√3。

x²-4x+1=0的配方法解答过程如下:

(1)把1化成4-3:x²-4x+4-3=0

(2)x²-4x+4可以组成一个完全平方式: (x-2)²=3

(3)两边同时开根号:x-2=±√3

(4)最后移项得到两个结果:x1=2+√3或 x2=2-√3。

扩展资料:

配方法步骤:

1、方程两边都除以(或提取公因式)二次项系数,把二次项系数化为1。

2、把常数项移到方程的右边。

3、配方,就是在方程两边加上一次项系数的一半的平方。

4、左边写成平方形式,右边合并。

5、用直接开平方法。

6、求出x的值。

参考资料:百度百科-配方法

回答2:

解:x²-4x+1=0
x²-4x+4-4+1=0
(x-2)²-3=0
(x-2)²=3
∴x-2=±√3
∴x=2-√3或x=2+√3
这是一元二次方程中的配方法,望采纳!

回答3:

利用配方法解。
x²-4x+1=0
(x-2)²-3=0
(x-2)²=3
x-2=±√3
x=2±√3
x=2+√3或x=2-√3.

回答4:

分解因式: x²-4x+4-3=0
所以 (x-2)²=3
下面就会了吧
x=2+√3 或 x=2-√3

回答5:

此方程无解

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