题目内容
若x=
+1，则代数式
•
的值为______．
| 3 |
| x+3 |
| x-3 |
| x+1 |
| x2+4x+3 |
| x+3 |
| x-3 |
| x+1 |
| x2+4x+3 |
=
| x+3 |
| x-3 |
| x+1 |
| (x+3)(x+1) |
=
| 1 |
| x-3 |
当x=
| 3 |
| 1 | ||
|
| 3 |
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=
=
当x=
夺冠金卷全能练考系列答案题目内容
| 3 |
| x+3 |
| x-3 |
| x+1 |
| x2+4x+3 |
| x+3 |
| x-3 |
| x+1 |
| x2+4x+3 |
| x+3 |
| x-3 |
| x+1 |
| (x+3)(x+1) |
| 1 |
| x-3 |
| 3 |
| 1 | ||
|
| 3 |
夺冠金卷全能练考系列答案