Question 878006

{{{Z=V/I}}}
{{{Z=(-50+100j)/(-6-2j)=(-50(1-2j))/(-2(3+j))}}}


{{{Z=25((1-2j)/(3+j))((3-j)/(3-j))}}}
{{{Z=25((3-j-6j+2j^2)/(9-3j+3j-j^2))}}}
{{{Z=25((1-7j)/(10))}}}
{{{Z=(5/2)(1-7j)}}}