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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
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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