Question

Resolva cada operação

a) ( 3+ 2i) + ( 1+ 5i) ( 2-i)

b) ( 2-i)² - 1+i

Answer 1

3+2i+(1+5i)(2-i)

3+2i+2-i+10i+6i

2i-i+10i+6i=3+2

18i-i=5

17i=5

i=5/17