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format .pdf, 0.9 MB - Recreaţii Matematice

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= −t 2 +20t − 50 ≥ 0. De aici, rezultă că t ∈ £ 10 − 5 √ 2, 10 + 5 √ 2 ¤ , deci t>0.Aşadar, avem a>b.G41. Dacă 0

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