Decades: 820s 830s 840s 850s 860s - 870s - 880s 890s 900s 910s 920s
Years: 873 874 875 876 877 - 878 - 879 880 881 882 883
Births
Deaths
... If the discriminant is negative, then there are two different solutions x, both of which are complex numbers. The two solutions are complex conjugates of eac ...