[2(a+1)]^2-4*(3a^2+4ab+4b^2+2)=0
4a^2+8a+4 -12a^2-16ab-16b^2-8=0
-8a^2+8a-16ab-16b^2-4=0
-4(a^2-2a+1)-4(a+4ab+4b^2)=0
(a-1)^2+(a+2b)^2=0a=1,a+2b=0,b=-1/2