(1+ 2i)(3-4i)(-2-i)

2025-02-26 07:18:26
推荐回答(1个)
回答1:

注意i²=-1,计算如下:
(1+ 2i)(3-4i)(-2-i)
=(3+8+6i-4i)(-2-i)
=(11+2i)(-2-i)
=-22+2-4i-11i
=-20-15i