Question

Ache o módulo dos complexos:
(3 - i)(2+i)​

Answer 1

( 3 - i ) ( 2 + i )

= 6 + 3i - 2i - i^2

= 6 + i - ( -1 )

= 6 + i + 1

= 7 + i

_______

| z | = √ 7^2 + 1^2

| z | = √49 + 1

| z | = √50 ou 5√2