Question

efetue a divisões: a) 1+5i:2+3i
b) 3i: 1+2i

Answer 1

Tem que multiplicar pelo conjugado
(1+5i)(2-3i)/2^2 - (3i)^2
2-3i+10i-15i^2/4-9i^2
2+7i-15 (-1)/4-9 (-1)
7i-13/4+9
7i-13/10i

3i (1-2i)/
1^2 - (2i)^2
3i (1-2i)/1-4i^2
3i (1-2i)/1-4(-1)
3i (1-2i)/1+4
3i-6i^2/5
3i-6 (-1)/5
3i+6/5