Factoriser: x²-4+4(2x+1)(x-2)
Mathématiques
dhondtheloise
Question
Factoriser:
x²-4+4(2x+1)(x-2)
x²-4+4(2x+1)(x-2)
2 Réponse
-
1. Réponse nonotata
x²-4+4(2x+1)(x-2)
(x-2)(x+2)+4(2x+1)(x-2)
(x-2)(x+2+4(2x+1)
(x-2) (x+2+8x+4)
(x-2)(9x +6) -
2. Réponse Anonyme
x² - 4 + 4(2x + 1)(x - 2)
= (x + 2)(x - 2) + 4(2x + 1)(x - 2)
= (x - 2)(x + 2 + 8x + 4)
= (x - 2)(9x + 6)