Bonjour !
A = -4(x + 3) + 5(6 + x)
A = -4x - 12 + 30 + 5x
A = x + 18
B = 3(8 + 2x) + 7(3x + 7)
B = 24 + 6x + 21x + 49
B = 27x + 73
C = 4x(-2x + 3) + 2x(3x - 6)
C = -8x² + 12x + 6x² - 12x
C = -2x²
D = 5x(6 - 7x) - x(8 + 2x)
D = 30x - 35x² - 8x - 2x²
D = 22x - 37x²
E = 6x(3x + 4) + 4(5x + 6)
E = 18x² + 24x + 20x + 24
E = 18x² + 44x + 24
F = -3x (-2x + 6) + x(4x - 2)
F = 6x² - 18x + 4x² - 2x
F = 10x² - 20x
G = -4(6 + 5x) + 9x(2x - 3)
G = -24 - 20x + 18x² - 27x
G = -24 - 47x + 18x²
H = 7x(3x - 2) - x(-6 + x)
H = 21x² - 14x + 6x - x²
H = 20x² - 8x
I = -3x(-2x + 6) + x(4x - 2)
I = 6x² - 18x + 4x² - 2x
I = 10x² - 20x
J'espère t'avoir aidé. Bon courage !
