问题
填空题
计算
|
答案
+(1+2i)2 3+4i
=(2+i)2 4-3i
+-3+4i 3+4i 3+4i 4-3i
=
+(-3+4i)(3-4i) (3+4i)(3-4i)
=(3+4i)(4+3i) (4-3i)(4+3i) 7+49i 25
=
+7 25
i49 25
故答案为：
+7 25
i49 25
搜题请搜索小程序“爱下问搜题”
计算
|
+(1+2i)2 3+4i
=(2+i)2 4-3i
+-3+4i 3+4i 3+4i 4-3i
=
+(-3+4i)(3-4i) (3+4i)(3-4i)
=(3+4i)(4+3i) (4-3i)(4+3i) 7+49i 25
=
+7 25
i49 25
故答案为：
+7 25
i49 25