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Berlin Papyrus 6619 (19th dynasty) contains a quadratic equation and its solution.
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Baudhayana, author of the Baudhayana Sulba Sutra, a Vedic Sanskrit geometric text, contains quadratic equations, and calculates the square root of 2 correct to five decimal places.
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He wrote a series of books called Arithmetica (solved algebraic equations)
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During 7th century .He wrote the first clear description of the quadratic formula.
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During the 8th and 9th century. He wrote mathematical books which established algebra as a discipline that is independent of geometry and arithmetic.
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During 11th century. He wrote “Treatise on demonstrations of problems “
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During 16th century CE .His work was an important step towards modern algebra.
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During 17th century .He introduced modern algebraic notation
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During 17th century. Used matrices
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During 19th century .Founder of axiomatic thinking.