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Date: Mon, 14 Aug 23 16:23:54 +0000
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Le 14/08/2023 à 18:20, Olivier Miakinen a écrit :
> Le 14/08/2023 à 18:03, Richard Hachel a écrit :
>>> 
>>> [...]
>>> 
>>> 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.
> 
> En troisième, n'as-tu pas vu les identités remarquables ?
>  (A + B)² = A² + 2AB + B²
>  (A - B)² = A² - 2AB + B²
>  (A + B)(A - B) = A² - B²

 Non, c'était le programme de seconde, ça. 

 R.H.