If Q = 11 - 5i, E = 3 - 2i, and D = 2i, find QED.
QED=(11−5i)(3−2i)(2i)
We can split this up into two parts. Let's first compute (11−5i)(3−2i), and then multiply it again by 2i.
(11−5i)(3−2i)=11(3−2i)−5i(3−2i)=33−22i−15i+10i2=33−37i−10=23−37i.
2i⋅(23−37i)=46i−74i2=74+46i