Question

resolva a expressão 4+3i+(1+6i) (3-i)

Answer 1

4+3i+(1+6i).(3-i) = 
4 + 3i + (3 -i + 18i - 6i²) = 
4 + 3i + (3 + 17i - 6(-1)) =
4 + 3i + (3 + 17i + 6) = 
4+ 3i + 3 + 17i + 6 = 
13 + 20i 

Bons estudos

Answer 2

4 + 3i + (1 + 6i)(3 - i)

4 + 3i + (3 - i + 18i - 6i²)

4 + 3i + 3 - i + 18i - 6(-1)

4 + 3i + 3 - i + 18i + 6

4 + 3 + 6 + 3i - i + 18i

13 + 20i

Resposta: 13 + 20i

Espero ter ajudado.