已知复数z=2i1+i，z的共轭复数为则z-，则z·z-=（）_刷题宝

题干

已知复数z=

2

i

1

+

i

，z的共轭复数为则z-，则z·z-=（）

A： $1 - i$

B：2

C： $1 + i$

D：0

上一题下一题 0.0难度选择题更新时间:2018-10-15 09:11:43

答案(点此获取答案解析）

B

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