romsek Math Team Sep 2015 2,875 1,608 USA Feb 3, 2020 #2 Oh come on, it's just subtraction. Just pair up the real and imaginary parts and subtract them from each other. Reactions: topsquark

Oh come on, it's just subtraction. Just pair up the real and imaginary parts and subtract them from each other.

romsek Math Team Sep 2015 2,875 1,608 USA Feb 3, 2020 #4 $w =-5+i\\ z = 3+5i\\ z-w = (3+5i) - (-5+i) = \\ 3-(-5) + i(5-1) = \\ 8 + 4i $ Reactions: topsquark