Verified answer

Bonjour,

a) -2x -8 = -2( x +4)

b) x^2 +5x = x ( x +5 )

c) -6x^2 -12x = -6x (x +2)

d) -3x +6 = 3 (-x +2)

e) 3x -x^2 = x ( 3 -x)

f) -2x^2 +4x = 2x (-x +2)

Réponse :

Explications étape par étape

Bonjour,

Factoriser les expressions suivantes :

-2x - 8

= -2 * x - 2 * 4

= -2(x + 4)

x² + 5x

= x * x + 5 * x

= x(x + 5)

-6x² - 12x

= -6x * x - 6x + 2

= -6x(x + 2)

-3x + 6

= 3 * (-x) + 3 * 2

= 3(-x + 2)

3x - x²

= x * 3 + x * (-x)

= x(3 - x)

-2x² + 4x

= 2x * (-x) + 2x * 2

= 2x(-x + 2)