а) ( 2-4i)+(3+i) = 5-3i
б) (3+7i)-(-2-3i)=5+10i
в) (10-3i)(1-6i)=10 -60i -3i + 18i^2 = 10 -63i -18=-8 - 63i
г) (4-4i)^2=16 -32i -16 = -32i.
д) 5-2i дробь 3+i = (5-2i)(3-i)/(3+i)(3-i)=(15 -5i -6i -2)/9+1 = (13 -11i)/10
а) ( 2-4i)+(3+i) = 5-3i
б) (3+7i)-(-2-3i)=5+10i
в) (10-3i)(1-6i)=10 -60i -3i + 18i^2 = 10 -63i -18=-8 - 63i
г) (4-4i)^2=16 -32i -16 = -32i.
д) 5-2i дробь 3+i = (5-2i)(3-i)/(3+i)(3-i)=(15 -5i -6i -2)/9+1 = (13 -11i)/10