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复数(1+i)2等于
2i
-2i
2-2i
2+2i
A.2i
B.-2i
C.2-2i
D.2+2i
复数z满足·(1+2i)=4+3i,则z等于 ( )
A.1-2i B.2-I C.1+2i D.2+i