a+3i |
1+2i |
A.-8 | B.-6 | C..3 | D.7 |
a+3i |
1+2i |
(a+3i)(1-2i) |
5 |
a+3i-2ai+6 |
5 |
a+6 |
5 |
3-2a |
5 |
a+3i |
1+2i |
a+6 |
5 |
3-2a |
5 |
|
1 |
1+2i |
2i3 |
1-i |
A.i | B.-i | C.1 | D.-1 |
A.x=1y=-1 | B.x=0y=-1 | C.x=1y=0 | D.x=0y=0 |
A.2 | B.-2 | C.
| D.-
|
(3+4i)(3-5i) |
3+5i |
5 |
1-2i |
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