Question

计算 (a/a-b)-(ab/a²-b²﹚+﹙b/a+b﹚

括号里是整体

Answer 1

(a/a-b)-(ab/a²-b²﹚+﹙b/a+b﹚
=a(a+b)/(a-b)(a+b) - ab/(a-b)(a+b) + b(a-b)/(a-b)(a+b)
= (a²+ab -ab + ab -b²)/(a+b)(a-b)
= (a² +ab -b²)/(a²- b²)

秋风燕燕为您答题 O(∩_∩)O
有什么不明白可以对该题继续追问
如果满意，请及时选为满意答案，谢谢

Answer 2

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