题目内容
化简:(2-
)•
得______.
| 4 |
| x+3 |
| x |
| x+1 |
原式=
•
=
•
=
.
故答案为:
| 2(x+3)-4 |
| x+3 |
| x |
| x+1 |
| 2(x+1) |
| x+3 |
| x |
| x+1 |
| 2x |
| x+3 |
故答案为:
| 2x |
| x+3 |
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题目内容
| 4 |
| x+3 |
| x |
| x+1 |
| 2(x+3)-4 |
| x+3 |
| x |
| x+1 |
| 2(x+1) |
| x+3 |
| x |
| x+1 |
| 2x |
| x+3 |
| 2x |
| x+3 |