|a+b+1|+a^2b^2+4ab+4=0
|a+b+1|+(ab+2)^2=0
则a+b+1=0
ab+2=0
ab=-2
a+b=-1
a^2+b^2+2ab=1
则a^2+b^2=1-2ab=1+4=5
-2a^2-2b^2
=-2(a^2+b^2)
=-2*5
=-10