问题
解答题
计算: (1)(3+2i)+(-2-i)-(1+i); (2)i2013•(1+i)•(2-i); (3)
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答案
(1)原式=(3-2-1)+(2-1-1)i=0-----------------------------------------------------------(4分)
(2)原式=i2012•i(1+i)(2-i)=i(1+i)(2-i)=(-1+i)(2-i)=-1+3i----------------(8分)
(3)原式=
=(1+2i)(3+4i) (3-4i)(3+4i)
=--5+10i 25
+1 5
i-------------------------------------------(12分)2 5