问题 填空题 计算(21-3i)2+(1+i3+i)2=______. 答案 复数(21-3i)2+(1+i3+i)2=[2(1+3i)(1-3i)(1+3i)]2+2i2+ 23i =-2+23i4+3+i4=3-2+(1+23)i4故答案为:3-2+(1+23)i4..