Question

计算：（a²-b²）/（ab）-（ab-b²）/（ab-a²）

（a²-b²）/（ab）-（ab-b²）/（ab-a²）

Answer 1

原式=(a方-b方)/ab -b(a-b)/a(b-a)
=(a方-b方)/ab+b/a
=(a方-b方)/ab+b方/ab
=(a方-b方+b方)/ab
=a方/ab
=a/b