Grab your calculator! It was in this century that algebra was invented by Arabic scholar al-Khwarizmi.

Have you always hated algebra class? Then, thank Muslim astronomer and mathematician, Muḥammad ibn Mūsā al-Khwārizmī. The 9th-century genius was the brains behind the concepts of algebra, which he introduced to Europe, along with Hindu-Arabic numerals. The words "algebra" and "algorithm" actually stem from a title of his mathematical works and his name.

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