题目内容
约分:
=______.
| x2-9 |
| x2-6x+9 |
| x2-9 |
| x2-6x+9 |
=
| (x-3)(x+3) |
| (x-3)2 |
=
| x+3 |
| x-3 |
故答案为
| x+3 |
| x-3 |
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将分式
约分得( )
| x2-9 |
| x2+4x+3 |
A、
| ||
B、
| ||
C、
| ||
D、
|
题目内容
| x2-9 |
| x2-6x+9 |
| x2-9 |
| x2-6x+9 |
| (x-3)(x+3) |
| (x-3)2 |
| x+3 |
| x-3 |
| x+3 |
| x-3 |
| x2-9 |
| x2+4x+3 |
A、
| ||
B、
| ||
C、
| ||
D、
|