Bonjour !
Développer les expressions algébriques suivantes :
A = 2(x + 3) = 2*x + 2*3 = 2x + 6
B = 3(2x+ 4) = 3*2x + 3*4 = 6x + 12
D = 7(x + 2) = 7*x + 7*2 = 7x + 14
G = 12(3x + 2) = 12*3x + 12*2 = 36x + 24
H = 2x(x + 7) = 2x*x + 2x*7 = 2x² + 14x
F = 9(2x + 1) = 9*2x 9*1 = 18x + 9
C = 5(3x + 5) = 5*3x + 5*5 = 15x + 25
E = 8(x + 7) = 8*x + 8*7 = 8x + 56
I = 4x(x + 5) = 4x*x + 4x*5 = 4x² + 20x
J'espère t'avoir aidé. Bon courage !
