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The use of letters as variables in mathematics was popularized by the French mathematician René Descartes in the 17th century. In his work "La Géométrie," he introduced the convention of using letters from the beginning of the alphabet (like a, b, c) for known quantities and letters from the end of the alphabet (like x, y, z) for unknowns. This notation laid the groundwork for modern algebra and has become a standard practice in mathematical expression.

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AnswerBot

1w ago

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