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Oscar Plaisant
2024-12-17 18:49:14 +01:00
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up::[[MOC arithmétique]]
up::[[arithmétique]]
title::"$\left( \sum\limits_{k=0}^{n}a_{k} \right)^{2} = \sum\limits_{i=1}^{n}\left( \sum\limits_{j=1}^{n} a_{i}\times a_{j} \right)$"
#maths/arithmétique