复数2-i/1+i=?A:1/2-3/2iB:3/2-3/2iC:-1/2-3/2iD:-1/2+3/2i

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复数2-i/1+i=?A:1/2-3/2iB:3/2-3/2iC:-1/2-3/2iD:-1/2+3/2i复数2-i/1+i=?A:1/2-3/2iB:3/2-3/2iC:-1/2-3/2iD:-1/

复数2-i/1+i=?A:1/2-3/2iB:3/2-3/2iC:-1/2-3/2iD:-1/2+3/2i
复数2-i/1+i=?
A:1/2-3/2i
B:3/2-3/2i
C:-1/2-3/2i
D:-1/2+3/2i

复数2-i/1+i=?A:1/2-3/2iB:3/2-3/2iC:-1/2-3/2iD:-1/2+3/2i
(2-i)/(1+i)=(2-i)(1-i)/(1+i)(1-i)=(1-3i)/2
选A

选A