Editing E:15991
Revision as of 06:59, 8 November 2023 by Andreea Marincas (talk | contribs) (Pagină nouă: '''E-15991''' '''(Cristina Vijdeluc și Mihai Vijdeluc, Baia Mare )''' ''Aflați numerele naturale <math>n</math> și <math>\overline{abc}</math> pentru care <math>\overline{abc}\cdot p^4=\overline{3abc}</math>.'' '''Soluție:''' ''Din <math>\overline{abc}\cdot n^4=\overline{3abc}</math> rezultă <math>\overline{abc}\cdot n^4=300+\overline{abc}</math> și apoi <math>\overline{abc}\cdot (n^4-1)=300</math>.'' ''Pentru <math>n=2</math> se obține <math>\overline{abc}=200</...)
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