Basisbewerkingen gemengd (a+bi)

Bereken

\((-7+5i)-(1+9i)\)

\((-7+5i)-(1+9i)= -7+5i -1-9i =\color{red}{-7-1}\color{blue}{+5i -9i}=\color{red}{-8}\color{blue}{-4i}\)