Editing E:16380
Revision as of 19:49, 27 December 2023 by Fellner Arthur (talk | contribs) (Pagină nouă: '''E:16380 (Cristina Vijdeluc, Salonic şi Mihai Vijdeluc, Baia Mare)''' ''Aflaţi numerele naturale ''<math>a,b,c,d</math>'' pentru care are loc relaţia ''<math>2(3^{a + 1} + 3^{b + 1} + 3^{c + 1}) = 3 \cdot 6 \cdot 9 \cdot \ldots \cdot d.</math> '''Soluție:''' Egalitatea din enunţul se poate scrie <math>6(3^a + 3^b +3^c) = 3 \cdot 6 \cdot 9 \cdot \ldots \cdot d.</math> Trebuie ca <math>d \geqslant 6</math> şi <math>d</math> să fie divizibil cu <math>3.</math> Dacă...)
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