Question

Putin ajutor aici... Va rog.

Answer 1

$\text{Ai inceput bine dar nu stiu de ce nu ai terminat.}\\ \dfrac{10}{3+i}=a+bi ; a,b\in \mathbb{R}\\ \dfrac{10}{3+i}=\dfrac{10(3-i)}{9+1}=\dfrac{30-10i}{10}=3-i\\ \text{Asadar avem ca:}a+bi=3-i\Rightarrow \boxed{a=3;\ b=-1}$