Editing E:14228
Revision as of 18:38, 22 October 2023 by Rsovago (talk | contribs) (Pagină nouă: '''E:14228 (Mihai Vijdeluc)''' ''Arătați că nu există niciun număr de forma <math>\overline{abc}</math> cu proprietatea că <math>\sqrt{\overline{abc}} = \sqrt{\overline{bc}} + a</math>'' '''Soluție:''' Ridicăm relația la patrat și obținem <math>\overline{abc} = \overline{bc} + a^2 + 2a\sqrt{\overline{bc}}</math>, echivalentă cu <math>100a + 10b + c = 10b + c + a^2 + 2a\sqrt{\overline{bc}}</math> sau <math>100 = a + 2\sqrt{\overline{bc}}</math>. Valorile maxime p...)
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