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Re: [obm-l] Equa��o 2 grau

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Subject: Re: [obm-l] Equa��o 2 grau
From: "Leonardo Borges Avelino" <topgun.lba@xxxxxxxxx>
Date: Wed, 18 Oct 2006 00:28:02 -0200
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Bruna vc sabe q o produtos das duas ra�zes � c/a mas c/a<0 logo o produto < 0

ent�o as ra�zes tem sinais contr�rios, pois a,b e c s�o <> 0

2006/10/17, Bruna Carvalho <bruna.carvalho.pink@gmail.com>:

Demostrar que dada uma equa��o do segundo grau ax^2+bx=c=0, a,b, c reais e a diferente de zero, se a e c tem sinais contraios, isto �, a � positivo e c negativo ou vice versa, ent�o a equa��o admite duas ra�zes reais, distintas, sendo um positiva e outra negativa.

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