G= 7(5x - 3) 1 = 6(x + 4) K = 4(x + 7) H = x(x-8) J = 5(3x +12) L = 6(1 + 4x) 34.11 Développer les expressions. A= x(5x + 1) B = 3(2x -13) C = 3x(5x + 2) D= -4(

G = 7 * 5x - 7 * 3 = 35x - 21

I = 6 * x + 6 * 4 = 6x + 24

K = 4 * x + 4 * 7 = 4x + 28

H = x * x - x * 8 = x2 (en indice) - 8x

J = 5 * 3x + 5 * 12 = 15x + 60

L = 6 * 1 + 6 * 4x = 6 + 24x


A = x * 5x + x * 1 = x2 (en indice) + x

B = 3 * 2x - 3 * 13 = 6x - 39

C = 3x * 5x + 3x * 2 = 15x2 (en indice) + 6x

D = -4 * 7 - (-4) * 9x = -28 + 36x

E = 3 * (-7x) - 3 * 3 = -21x - 9

F = -2x * (-x) - (-2) * (-4) = 2x2 (en indice) + 8