Question

Z1=2+3i
Z2=1-3i
Arătați ca Z1+Z2 aparțin lui R

Answer 1

$z_1+z_2=2+3i+1-3i \\\\ z_1+z_2=2+1 \to 3 \in R$

Answer 2

z₁+z₂= 2+3i+1-3i=3 ∈ R

O zi buna!