1) 2*4-(х-4)=0
8-х+4=0
х=12
2) х+22-3х*4=0
х-12х+22=0
-11х=-22
х=2
3(y-1)^2+6y=3(y^2-2y+1)+6y=3y^2-6y+3+6=3y^2+3