Bonjour,
Développer les expressions suivantes:
k(a + b) = ka + kb
A = 3(x + 7)
A = 3x + 21
B = 4(2x - 3)
B = 8x - 12
C = -11(-x - 5)
C = 11x + 55
D = x(2x + 9)
D = 2x² + 9x
E = 3x(6 + 4x)
E = 18x + 12x²
E = 12x² + 18x
F = -2x(10 - 5x)
F = -20x + 10x²
F = 10x² - 20x
Bonne journée.
