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[obm-l] Algebra
- To: obm-l@xxxxxxxxxxxxxx
- Subject: [obm-l] Algebra
- From: "Bruna Carvalho" <bruna.carvalho.pink@xxxxxxxxx>
- Date: Thu, 27 Apr 2006 20:38:42 -0300
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Os números naturais a e b, com a>b, são tais que a^2-b^2=7. O valor de a-b é:
a)0 b)1 c)3 d)4 e)7