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audeline
@audeline
December 2020
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Bonjour, je suis complètement bloqué...
j’en ai déduis que aire (80m^2) = (x+ 1,15)^2 + x^2
grâce à l’identité remarquable, j’en déduis que 80= (x^ + 2,3x + 1,3225 )+ x^2
donc 0 = 2x^ + 2,3x + 1,3225 - 80
= 2x^ + 2,3x -78,6775
et la j’ai voulu calculer le discriminant ce qui me donne un delta négatif (ce qui n’est pas logique)
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