Bonsoir,
Factoriser:
Factoriser à l'aide d'un facteur commun:
>> Avec k, le facteur commun
A = 2 + 2x
A = 2*1 + 2*x
A = 2(x + 1)
✅
B = (x - 3)² - (x - 3)(4x + 1)
B = (x - 3)(x - 3) - (x - 3)(4x + 1)
B = (x - 3)(x - 3 - (4x + 1))
B = (x - 3)(x - 3 - 4x - 1)
B = (x - 3)(-3x - 4)
B = -(x - 3)(3x + 4)
B = (3 - x)(3x + 4)
✅
C = (x + 1)(x + 2) - 5(x + 2)
C = (x + 2)(x + 1 - 5)
C = (x + 2)(x - 4)
✅
D = (x - 6)(2 - x) - (2 - x)(3 + 4x)
D = (2 - x)(x - 6 - (3 + 4x))
D = (2 - x)(x - 6 - 3 - 4x)
D = (2 - x)(-3x - 9)
D = (2 - x) * (-3)*(x + 3)
D = -3(2 - x)(x + 3)
D = 3(x - 2)(x + 3)
✅
* = multiplication
Bonne soirée
