Question

Комплексные числа
z1= 3-4i

z2= -3i

z3= 2
Вычислить:
3) Z1(Z3-Z2)
4) Z3+Z2/Z1

Answer 1

i²=-1

z₁*(z₃-z₂)= (3-4i)*(2+3i)=6+9i-8i-12i²=18+i

z₃+z₂/z₁=2-3i/(3-4i)=2-(3i*(3+4i))/(9-16i²)=2-(9i+12i²)/25=(50-9i-12i²)/25=

62/25-9i/25