题目内容
(1)
÷
(2)
-
.
x2+1 |
x-6 |
x3+x |
x2-36 |
(2)
a |
a2-b2 |
1 |
a+b |
(1)
•
=
;
(2)原式=
=
.
x2+1 |
x-6 |
(x+6)(x-6) |
x(x2+1) |
x+6 |
x |
(2)原式=
a-(a-b) |
(a+b)(a-b) |
=
b |
(a+b)(a-b) |
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