Question

determine a forma algébrica do quociente 4+i/4-i

Answer 1

Oi 

z = (4 + i)/(4 - i) = (4 + i)*(4 + i)/(4 + i)*(4 - i) 

z = (16 + 8i - 1)/(16 + 1) = (15 + 8i)/17