Slt est ce que qq peut m’aider stp c’est le 18 Merci d’avance ❤️

Réponse :

écriture sans le signe multiplier, on obtient:

A = 3x + 5

B = 8 - 2x

C = 4(2x - 3)

D = 4x(x - 1)

E = 2x(5x - 3)

si x = 3

alors

A = 3*3 + 5 = 9 +5 = 14 * signifie multiplier

B = 8 - 2*3 = 8 - 6 = 2

C = 4(2*3 - 3) = 4(6 - 3) = 4*3 = 12

D = 4*3(3 - 1) = 12*2 = 24

E = 2*3(5*3 - 3) = 6(15 -3) = 6*12 = 72

si x = -2

alors

A = 3(-2) + 5 = -6 +5 = -1

B = 8 - 2(-2) = 8 +4 = 12

C = 4[2(-2) - 3] = 4(-4 -3) = 4*(-7) = -28

D = 4(-2)(-2 - 1) = -8*(-3) = 24

E = 2(-2)[5(-2) - 3] = -4(-10 -3) = -4*(-13) = 52

j'espère avoir aidé