Question

Dados os números complexos z=2+3i, e w=5-2i, calcule:

a) z+w
b) z.w
c) z/w

Answer 1

a) 2+3i+5-2i= 7+1i
b) (2+3i).(5-2i)=10-4i+15i-6i²=10+11i+6=16+11i
c) 2+3i.(5+2i)/5-2i .(5+2i)=10+4i+15i+6i²/25-4i²=
10+19i-6/25+4=4+19i/29