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Completing the square
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== History == {{Further|Algebra#History}} The technique of completing the square was known in the [[Old Babylonian Empire]].<ref>Tony Philips, "[https://mathvoices.ams.org/featurecolumn/2020/11/01/fc-2020-10-2 Completing the Square]", ''American Mathematical Society Feature Column'', 2020.</ref> [[Muhammad ibn Musa Al-Khwarizmi]], a famous [[polymath]] who wrote the early [[Algebra|algebraic]] treatise [[Al-jabr|Al-Jabr]], used the technique of completing the square to solve quadratic equations.<ref>{{Cite web |last=Hughes |first=Barnabas |date= |title=Completing the Square - Quadratics Using Addition |url=https://www.maa.org/press/periodicals/convergence/completing-the-square-quadratics-using-addition |access-date=2022-10-21 |website=[[Math Association of America]]}}</ref>
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