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Date: Mon, 14 Aug 23 16:03:18 +0000
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From: Richard Hachel <r.hachel@frite.fr>
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Le 14/08/2023 à 15:49, Thomas Alexandre a écrit :
> Le Mon, 14 Aug 23 12:45:24 +0000, Richard Hachel a écrit :
> 
>> ab+a=32
>> ab+b=35
>> 
>> Comment feriez-vous?
> 
> (I)  ab + a = 32
> (II) ab + b = 35
> 
> II-I donne b = a + 3,
> 
> on remplace dans I :
> 
> a²+4a-32 = 0
> 
> de discriminant Δ = 12²
> 
> de solutions   a₁= 4, a₂ = -8
> respectivement b₁= 7, b₂ = -5

J'avais bon jusque b=a+3

Mais après, les histoires de miscrinimant on l'a pas fait en troisième 
de chez monsieur Bourgeois.

R.H.