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1867

Centuries: 18th century - 19th century - 20th century

Decades: 1810s 1820s 1830s 1840s 1850s - 1860s - 1870s 1880s 1890s 1900s 1910s

Years: 1862 1863 1864 1865 1866 - 1867 - 1868 1869 1870 1871 1872


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Quadratic formula

... equation is now in a form in which we can conveniently complete the square[?]. To "complete the square" is to add a constant ...

 
 
 
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