bonjour j’ai besoin de developper les expressions suivantes a l’aide de la distributivité ! A=(-3x-7)X2 B=8(10x-8) C=(-x-7)X10 D=-5x(6x-7) E=-9(10x+3) F=4x(7x

Bonsoir

A = (-3x - 7) * 2
= 2 * (-3x) + 2 * (-7)
= -6x - 14

B = 8 (10x - 8)
= 8 * 10x + 8 * (-8)
= 80x - 64

C = (-x - 7) * 10
= 10 * (-x) + 10 * (-7)
= -10x - 70

D = -5x (6x - 7)
= -5x * 6x - 5x * (-7)
= -30x² + 35x

E = -9 (10x + 3)
= -9 * 10x - 9 * 3
= -90x - 27

F = 4x (7x + 9)
= 4x * 7x + 4x * 9
= 28x² + 36x

G = (-7x + 2) * (-10x)
= -10x * (-7x) - 10x * 2
= 70x² - 20x

H = (-2x + 6) * 9x
= 9x * (-2x) + 9x * 6
= -18x² + 54x

Voilà j'espère avoir pu t'aider ^^

A = (-3x)*2 + (-7)*2
A= -6x - 14
B= 80x - 64
C= -10x - 70
D= -30x² + 35x
E= -90x -27
F= 28x² + 36x
G= 70x² - 20x
H= -18x²+ 54