y(y-4)=2-8y
y^2-4y+8y-2=0
y^2+4y-2=0
d=4^2+4*2=24
y=(-4±√d)/2=(-4±2√6)/2=-2±√6
(3x-1)^2=(x+1)^2
(3x-1)^2-(x+1)^2=0
(3x-1+x+1)(3x-1-x-1)=0
4x*(2x-2)=0
8x(x-1)=0
x=0,1