Решить (а+2/а^2-2ав+в^2-а/а^2-в^2)*а-в/ав+в^2=

(a+2/a^2-2ab+b^2-a/a^2-b^2)*a-b/ab+b^2=(a^3+2-2a^3b+a^2b^2)a/a^2 -b/ab+b^2=a(a^3+2-2a^3b-a)/a^2-b+ab^3/ab=a^4b+2ab-2a^4b^2-a^2b-ab-a^2b^3/a^2b=a^4b-ab-2a^4b^2-a^2b-a^2b^3/a^2b=a^3-1-2a^3b-a-ab^2/a=a^2-2a^2b-1-b^2=(a^2-2a^2b-b^2)-1-1=(a-b)^2-2