aratati ca a=(3 la puterea 21+ 3 la puterea20+ 3 la puterea 19):39 este patrat perfect determinati ultima cifra a produsului p=3 la puterea 71x4 la puterea 62 determinati ultima cifra a nr natural x daca 7 la puterea x+ 7 la puterea x+2=2450

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Clasă: Education Materie: matematica
aratati ca a=(3 la puterea 21+ 3 la puterea20+ 3 la puterea 19):39 este patrat perfect determinati ultima cifra a produsului p=3 la puterea 71x4 la puterea 62 determinati ultima cifra a nr natural x daca 7 la puterea x+ 7 la puterea x+2=2450
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Va rog ajutatima am nevoie urgent!!
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Bonjour, pouvez-vous m'aider merci
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