[obm-l] Equacao

To: obm-l@xxxxxxxxxxxxxx
Subject: [obm-l] Equacao
From: Klaus Ferraz <klausferraz@xxxxxxxxxxxx>
Date: Wed, 2 Nov 2005 12:23:11 +0000 (GMT)
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Mostre que a equacao x² + 4 = y³ tem exactamente duas solu��es inteiras positivas.

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