Divizibilitate tip vieta-jumping

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Filip Chindea
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Divizibilitate tip vieta-jumping

Post by Filip Chindea »

Fie \( k \) un intreg pozitiv. Sa se arate ca \( (4k^2 - 1)^2 \) are un divizor de forma \( 8kn - 1 \Leftrightarrow k \) este par.

[ IMO 2007/5 si Shortlist N6 ]
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