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Pages from Al-Khwārizmī Algebra Book — From a 14th-century Arabic copy, showing geometric solutions to two quadratic equations
Photo Credit: By en:Muḥammad ibn Mūsā al-Khwārizmī - The Bodleian Library, University of Oxford, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=43327479