Aidez moi à résoudre cette question, merci d'avance. 117 Utiliser une identité remarquable a. n désigne un nombre quelconque.
Développer et réduire l'expression (2n + 5)(2n - 5).
b. En utilisant la question a, calculer 205 x 195.
Conseil
205 = 200 + 5 et 195 = 200-5.Merci et bonne journée.​

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=