问题:
(1)
x2+1
x-6
÷
x3+x
x2-36
(2)
a
a2-b2
-
1
a+b
.
(1)
÷
(2)
-
.
x2+1 |
x-6 |
x3+x |
x2-36 |
(2)
a |
a2-b2 |
1 |
a+b |
参考答案: