Musa al-Khwarizmi Abu Abdullah Muhammad ibn Musa al-Khwarizmi (c. 780, – c. 850) -- Manoj Subedi (2010) Abu Abdullah Muhammad ibn Musa al-Khwarizmi was a Persian mathematician , astronomer and geographer , a scholar in the House of Wisdom in Baghdad . His Kitab al-Jabr wa-l-Muqabala presented the first systematic solution