Bonjour, dire si on peut distribuer si oui effectuer le développement A=5(2+x) B=2(x-4) C=(2-4x)×(-2) D=-5(3-x) E=(-x+1)×(-2) F=-4(6+x) G=5(4×y) H=a(-5a+1) I=-2

Bonsoir,

A = 5(2 + x)

A = 5 × 2 + 5 × x

A = 5x + 10

B = 2(x - 4) = 2x - 8

C = (2 - 4x)(-2)

C = 2 × (-2) - 4x × (-2)

C = 8x - 4

D = -5(3 - x)

D = -5 × 3 - 5 × (-x)

D = 5x - 15

E = (-x + 1) × (-2)

E = -2 × (-x) - 2 × 1

E = 2x - 2

F = -4(6 + x)

F = -4x - 24

G = 5(4 × y)

G = 5(4y) = 20y

H = a(-5a + 1)

H = -5a² + a

I = -2x(-x + 4)

I = 2x² - 8x

Bonne soirée !