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Al-Khwarizmi's Algebra

Frank J. Swetz, Victor J. Katz

Page from al-Khwarizmi's algebra text written in about 825. The proof of the rule for solving a quadratic equation of the form "squares plus roots equal numbers".

From the Rare Book and Manuscript Collection at Columbia University.

Part of the Mathematical Treasures section of Loci: Convergence.


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Frank J. Swetz, Victor J. Katz, "Al-Khwarizmi's Algebra," Convergence (November 2008)