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• 08:50, 17 July 2024 Andrei.Horvat talk contribs created page E:15777 (Pagină nouă: '''E:15777 (Anca Mihiș, Baia Mare)''' ''Arătaţi că numărul natural ''<math display="block">A = \left( 2^2 \cdot 2^4 \cdot 2^6 \cdot \ldots \cdot 2^{2020}\right): \left(2 \cdot 2^3 \cdot 2^5 \cdot \ldots \cdot 2^{2019} \right).</math> ''este pătratul unui număr natural.'' '''Soluția 1.''' Folosind regulile de calcul cu puteri, numărul <math>A</math> devine <math display="block"> A = 2^{2-1} \cdot 2^{4-3} \cdot 2^{6-5} \cdot \ldots \cdot 2^{2020-2019}.</math> Deci...) Tag: Visual edit: Switched