4x^2+6x-2=x^2-2x+1
4x^2+6x-2-x^2+2x-1=0
3x^2+8x-3=0
D=b^2-4ac
D=64+4*3*3=100
x1=-8+10/6=2/6=1/3
x2=-8-10/6=-3