Réponse :
Explications étape par étape
Bonjour
Développer les expressions.
A = x(5x + 1)
A = x * 5x + x * 1
A = 5x^2 + x
B = 3(2x - 13)
B = 3 * 2x - 3 * 13
B = 6x - 39
C = 3x(5x + 2)
C = 3x * 5x + 3x * 2
C = 15x^2 + 6x
D = -4(7 - 9x)
D = -4 * 7 - 4 * (-9x)
D = -28 + 36x
E = 3(-7x - 3)
E = 3 * (-7x) + 3 * (-3)
E = -21x - 9
F = -2x(-x - 4)
F = -2x * (-x) - 2x * (-4)
F = 2x^2 + 8x
