April 2019 2 12 Report

besoin d'aide merci :) suprimer les parenthèse dans kes expressions suivantesbet reduire le resultat :

ps ceci:^veut dire puissance :)

a=(x^2+5x-3)+(x^2-x+7) b=(3x^2-4x-3)-(x^2-2x+7)

c= - (x^2+6x-3)+(x^2+2+1) d= - (x^2-3x+1)-(x^2+5x-3)

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