1+2i |
3-4i |
A.-
| B.-
| C.
| D.
|
1+2i |
3-4i |
(1+2i)(3+4i) |
(3-4i)(3+4i) |
-5+10i |
25 |
1 |
5 |
2 |
5 |
1+2i |
3-4i |
1 |
5 |
2 |
5 |
A.2i | B.0 | C.-2i | D.-2 |
2-i |
1+i |
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
z1 |
z2 |
A.6 | B.-6 | C.0 | D.
|
. |
z |
A.1+i | B.1-i | C.
| D.
|
A.x=3且y=3 | B.x=5且y=1 | C.x=-1且y=-1 | D.x=-1且y=1 |
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