Question

calcule o conjugado do numero complexo z=1+3i/2-i

Answer 1

$Z = \frac{1+3i}{2-i}= \frac{(1+3i)(2+i)}{(2-i)(2+i)} = \frac{2+i+6i+3i^2}{4-i^2} = \\ \frac{2+7i+3(-1)}{4-(-1)} = \frac{-1+7i}{5} =-\frac{1}{5}+ \frac{7}{5}i =\ \textgreater \ W=- \frac{1}{5} - \frac{7}{5}i$

Answer 2

resposta na imagem anexada