题目内容
计算:
=______.
| (1+2i)2 |
| 3-4i |
∵(1+2i)2=1+4i+4i2=-3+4i
∴
=
=
=-1
故答案为:-1
∴
| (1+2i)2 |
| 3-4i |
| -3+4i |
| 3-4i |
| -(3-4i) |
| 3-4i |
故答案为:-1
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题目内容
| (1+2i)2 |
| 3-4i |
| (1+2i)2 |
| 3-4i |
| -3+4i |
| 3-4i |
| -(3-4i) |
| 3-4i |