3y^2-6y+2=03(y^2-2y)+2=03(y-1)^2-1=03(y-1)^2=1(y-1)^2=1/3y-1=±√3/3y=1±√3/3.
3y^2-6y+2=0y^2-2y=-2/3y^2-2y+1=1-2/3=1/3(y-1)^2=1/3y-1=±√1/3=±√3 /3y=1±√3 /3=(3±√3)/3
1+-3分之根三
y1=(3+根号3)/3,y2=(3-根号3)/3
y=(3+√3)/3 y=(3-√3)/3