Question 175556
{{{(a+bi)(c+di)=(ac-bd)+(ad+bc)i}}}
{{{(a+bi)/(c+di)=((a+bi)/(c+di))((c-di)/(c-di))=((a+bi)(c-di))/(c^2+d^2)}}}
You finish the division by using the multiplication rule above and always writing your answer in a+bi format.