问题
填空题
已知i是虚数单位,计算:(
|
答案
(
)2-(1+2i 1-i
)2=(2-i 1+i
)2-((1+2i)(1+i) (1-i)(1+i)
)2=((2-i)(1-i) (1+i)(1-i)
)2-(-1+3i 2
)23-3i 2
=(
-1 4
-9 4
i )-(-3 2
i )=-2+3i,9 2
故答案为-2+3i.
已知i是虚数单位,计算:(
|
(
)2-(1+2i 1-i
)2=(2-i 1+i
)2-((1+2i)(1+i) (1-i)(1+i)
)2=((2-i)(1-i) (1+i)(1-i)
)2-(-1+3i 2
)23-3i 2
=(
-1 4
-9 4
i )-(-3 2
i )=-2+3i,9 2
故答案为-2+3i.