a^2*b^2+a^2+b^2+16-10ab=0
a^2*b^2-8ab+16+(a-b)^2=0
(ab-4)^2+16+(a-b)^2=0
(ab-4)^2=0 (a-b)^2=0 a=b ab=4
得出a=b=2或-2 a^2+b^2=4+4=8
a^2*b^2+a^2+b^2+16-10ab=0
a^2*b^2-8ab+16+(a-b)^2=0
(ab-4)^2+16+(a-b)^2=0
(ab-4)^2=0 (a-b)^2=0 a=b ab=4
得出a=b=2或-2 a^2+b^2=4+4=8