## Encyclopedia > 830s

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# 830s

Decades: 780s - 790s - 800s - 810s - 820s - 830s - 840s - 850s - 860s - 870s - 880s

Events:

Important people:

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 Binomial theorem ... {r \choose k} x^k y^{r-k}\quad\quad\quad(2)[/itex] where r can be any complex number (in particular r can be any real number, not necessarily positive and not ...