Répondre :
A= 3*3 - 2 * 3 + 2 = 9 - 6 + 2 = 3 + 2 = 5
A= -2 - 2 - 2 - 2 + 2 = -2
A = x²-2x+2. (x=3) ==> = 3²-6+2 = 9 -4 = 5
A = x²-2x+2. (x=-2) ==> 4 - 4 + 2 = 2
On considère l'expression A = x²-2x+2. Calculer l'expression A pour : a : x = 3 . b : x = -2 . Merci de votre aide ..
A= 3*3 - 2 * 3 + 2 = 9 - 6 + 2 = 3 + 2 = 5
A= -2 - 2 - 2 - 2 + 2 = -2
A = x²-2x+2. (x=3) ==> = 3²-6+2 = 9 -4 = 5
A = x²-2x+2. (x=-2) ==> 4 - 4 + 2 = 2