1. (3 + (2 * i)) * (1 + i) =1 + 5 i
2. (6 + (4 * i)) * 3 * i =-12 + 18 i3 (2 - (3 * i)) * (–(5 * i)) =-15 - 10 i
(x^2-2x-3)(3-x)=0
Ответ:x= - 1
X=3
3 1/3 - 0.2х= 2/3х+5,4
-0,2х-2/3х=5,4-3 1/3
-2/3х=5 1/15
х= 12 2/3
(200-199)*(36:9)=(200-199=1)*(36:9=4)=4
Проверка: 1+199=200(200-199), (9+9+9+9):4=9(36:9)