题目内容
（1+i）÷（3+4i）=______．
（1+i）÷（3+4i）=
=
=
=
-
i，
故答案为：
-
i
| 1+i |
| 3+4i |
| (1+i)(3-4i) |
| (3+4i)(3-4i) |
=
| 3+3i+4-4i |
| 25 |
| 7 |
| 25 |
| 1 |
| 25 |
故答案为：
| 7 |
| 25 |
| 1 |
| 25 |
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题目内容
| 1+i |
| 3+4i |
| (1+i)(3-4i) |
| (3+4i)(3-4i) |
| 3+3i+4-4i |
| 25 |
| 7 |
| 25 |
| 1 |
| 25 |
| 7 |
| 25 |
| 1 |
| 25 |