x的4次方－6x²＋9＝0因式分解法解,

x的4次方－6x²＋9＝0因式分解法解,
x的4次方－6x²＋9＝0因式分解法解,

x的4次方－6x²＋9＝0因式分解法解,
(x^2-3)^2 =0
x^2=3
x=正负+√3

=(x²-3)²
=(x+根号3)²（x-根号3）²

(x^2-3)^2 =0
x^2=3
x=±√3

0=（x^2-3)^2
x²-3=0
x1=根号3，x2=负根号3