解一元二次方程：x²-3x+1=0

解一元二次方程：x²-3x+1=0
解一元二次方程：x²-3x+1=0

解一元二次方程：x²-3x+1=0
x²-3x+1=0
(x-3/2)^2=9/4-1
x-3/2=±√5/2
x=3/2±√5/2

x²-3x=-1
x²-3x+9/4=-1+9/4
(x-3/2)²=5/4
x-3/2=±√5/2
x=(3-√5)/2，x=(3+√5)/2