複數2i1−i的共軛複數是______.

複數2i1−i的共軛複數是______.

化簡可得2i1−i=2i(1+i)(1−i)(1+i)=2i(1+i)2=i(1+i)=-1+i,∴複數2i1−i的共軛複數為:-1-i故答案為:-1-i