a^2+b^2-6ab=0
a^2+b^2+2ab-8ab=0
(a+b)^2=8ab
a^2+b^2-6ab=0
a^2+b^2-2ab-4ab=0
(a-b)^2=4ab
(a+b)^2/(b-a)^2
=(a+b)^2/(a-b)^2
=8ab/4ab
=2
a^2+b^2-6ab=0
a^2+b^2+2ab-8ab=0
(a+b)^2=8ab
a^2+b^2-6ab=0
a^2+b^2-2ab-4ab=0
(a-b)^2=4ab
(a+b)^2/(b-a)^2
=(a+b)^2/(a-b)^2
=8ab/4ab
=2