A)
6\x+3\x+2=2
6(Х+2)+3х-2х(х+2)=0
6х+12+3х-2х²-4х=0
5х-2х²+12=0
D=5²-4*(-2)*12=25+96=121=11²
Х1=-5-11\2*(-2)=-16\-4=4
Х2=-5+11\-4=6\-4=-1.5
4\t²-4 - 1\t-2=0
4-t-2=0
-t=-2
t=2
1\y-1\y+3=y+1\y²+3y
y+3\y(y+3)-y\y(y+3)-y-1\y(y+3)=0
y+3-y-y-1=0
-y+2=0
-y=-2
y=2