化简ab分之a²-b²-ab-a²分之ab-b²=_数学解答

化简ab分之a²-b²-ab-a²分之ab-b²=

人气：334 ℃　时间：2020-03-19 05:32:51

解答

原式=(a²-b²)/ab-b(a-b)/[-a(a-b)]
=(a²-b²)/ab+b/a
=(a²-b²)/ab+b²/ab
=(a²-b²+b²)/ab
=a²/ab
=a/b