Bonjour,Exercice Maths niveau 4ème ! URGENT :) Voici l'énoncé : Réduire les expressions suivantes :
5 x^{2} +3x - 4 -2 x^{2} + x + 4 =
3 x^{2} - 2x + 1 + x^{2} - x =
6x + 3 - 4 x^{2} - 5 =
Je vous remercies d'avance ! :)
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