Ii-imaginary numbers zabizwa ngokuba zii-imaginary kuba ukufunyanwa kwazo okokuqala, iingcali zemathematika ezininzi zange zicinge okokuba ngamanani akhoyo. Template:Fact umntu owafumanisa ezi-imaginary numbers yaba ngu-Gerolamo Cardano ngoo-1500s. Umntu wokuqala ukusebenzisa amagama athi 'imaginarly numbers yaba ngu-René Descartes. Abantu bokuqala ukusebenzisa laa manani kwaba ngoo-e Leonard Euler no-Carl Friedrich Gauss. Bobabini babephila ngomnyaka wenkulungwana ye-18th century.