设Z=(2+i)(1-i)2,则复数Z所对应的点在    (    )A.第一象限      

设Z=(2+i)(1-i)2,则复数Z所对应的点在    (    )

A.第一象限         B.第二象限            C.第三象限         D.第四象限

答案

答案:

D  【解析】本题考查复数的运算及复数的几何意义等知识。根据复数的运算可得:z=(2+i)(1-i)2=(2+i)(-2i)=2-4i,根据复数的几何意义知其对应的点在第四象限.故答案选D.

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