Question

ok i need help with another one

Answer 1

\[\frac{ a }{ a-b }+\frac{ b }{ a+b }+\frac{ a ^{2}+b ^{2} }{ b ^{2}-a ^{2} }\]

Answer 2

Holy crap. That's a bit complicated.. I think I have
the answer though..

Answer 3

\[(a-b)(a+b)=(a^2-b^2)\]So your least common multiple is \(a^2-b^2\)