Factoriser 52par etapes A:x²-4+(x-2)(x+1) B:3x²-12x+12 C:x²+3x+(x+3)²* D:(x+1)(x+2)-(3x+6)
Mathématiques
mohamed0mk
Question
Factoriser
52par etapes
A:x²-4+(x-2)(x+1)
B:3x²-12x+12
C:x²+3x+(x+3)²*
D:(x+1)(x+2)-(3x+6)
52par etapes
A:x²-4+(x-2)(x+1)
B:3x²-12x+12
C:x²+3x+(x+3)²*
D:(x+1)(x+2)-(3x+6)
1 Réponse
-
1. Réponse Omnes
Salut,
x² - 4 + (x-2)(x+1)
(x+2)(x-2) + (x-2)(x+1)
(x-2)[(x+2) + (x+1)]
(x-2)(x + 2 + x + 1)
(x-2)(2x + 3)
3x² - 12x + 12
3(x² - 4x + 4)
3(x-2)²
x² + 3x + (x+3)²
x(x+3) + (x+3)²
x(x+3) + (x+3)(x+3)
(x+3)(x + x + 3)
(x+3)(2x + 3)
(x+1)(x+2) - (3x+6)
(x+1)(x+2) - 3(x+2)
(x+2)(x+1-3)
(x+2)(x-2)
Bonne soirée !