Exercice type Brevet de Mathématiques
Programme A
Choisir un nombre.
Prendre le carré du nombre choisi.
Multiplier le résultat par 4.
Ajouter le triple du nombre de départ.
Soustraire 2 au résultat.
Programme B
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1. a. Calculer le résultat du programme A si on choisit \(6\) comme nombre de départ.
b. Calculer le résultat du programme B si on choisit \(-8\) comme nombre de départ.
2. On choisit un nombre quelconque \(x\) comme nombre de départ.
a. Parmi les trois propositions ci-dessous, sélectionner l'expression qui donne le résultat obtenu par
le programme B.
b. Exprimer en fonction de \(x\) le résultat obtenu avec le programme A.