Упростите выражение (a-b)(a+b)-(a-b)^2/ab-b^2 a/a-b - b/a+b
A²-b²-(a²-2ab+b²)/ab-b²-b/a a²-b²-a²-2ab-b²/ab-b²-b/a -2b²+2ab/ab-b²-b/a b(-2b+2a)/ab-b²-b/a -2b+2a/a-b²-b/a -2b+2a-ab²-b/a -3b+2a-ab²/a