Respuesta :

bunnuika

Step-by-step explanation:

since z=v/I where v=7+8i and I=5i

z=7+8i/5i

according to complex number 1/i=-i

so we have

z=-i(7+8i)/5

=(-7i-8i²)/5

from complex number i²=-1

we have

z=(-7i-(-8))/5

z =(-7i+8)/5