3y^2-6y+2=0解方程

2024-11-22 08:34:25
推荐回答(5个)
回答1:

3y^2-6y+2=0
3(y^2-2y)+2=0
3(y-1)^2-1=0
3(y-1)^2=1
(y-1)^2=1/3
y-1=±√3/3
y=1±√3/3.

回答2:

3y^2-6y+2=0
y^2-2y=-2/3
y^2-2y+1=1-2/3=1/3
(y-1)^2=1/3
y-1=±√1/3=±√3 /3
y=1±√3 /3=(3±√3)/3

回答3:

1+-3分之根三

回答4:

y1=(3+根号3)/3,y2=(3-根号3)/3

回答5:

y=(3+√3)/3 y=(3-√3)/3