Question

Resposta

(9+4i)+(5+2i)-(8-i)

Answer 1

(9+4i)+(5+2i)-(8-i) =
=9 +4i + 5 + 2i -8 +i  =
= 9 + 5 - 8 + 4i + 2i + i =
= 6 + 7i

Solução (7i + 6)

Answer 2

(9+4i)+(5+2i)-(8-i)
9+4i+5+2i-8+i=0
Isola o i
4i+2i+i=8-9-5
7i=-6
i=$\frac{-6}{7}$
V={$\frac{-6}{7}$}