1 Développe puis réduis chaque expression. A = 2(x + 3) D = - 5(2 - x) B = 5(10x + 8) E = -3(4 + x) C = 4(3x + 1) F = 7(x - 9) Pouvez vous m'aidez s'il vous pla

Bonjour,

A = 2 (x + 3)

A = 2 * x + 2 * 3

A = 2x + 6

D = - 5x (2 - x)

D = -5x * 2 - 5x * (-x)

D = -10x + 5x²

B = 5 (10x + 8)

B = 5 * 10x + 5 * 8

B = 50x + 40

E = -3 (4 + x)

E = -3 * 4 - 3 * x

E = -12 - 3x

C = 4 (3x + 1)

C = 4 * 3x + 4 * 1

C = 12x + 4

F = 7 (x - 9)

F = 7 * x - 7 * 9

F = 7x - 63