factoriser (x+3)(5x-1)-(x²-9)
Mathématiques
stephaniegerbr
Question
factoriser (x+3)(5x-1)-(x²-9)
1 Réponse
-
1. Réponse hlp
(x+3)(5x-1)-(x²-9)
(x+3)(5x-1)-(x+3)(x-3)
(x+3) [(5x-1)-(x-3)]
(x+3)(5x-1-x+3)
(x+3)(4x+2)