E= (x-1)² -(x-1) (x-2)
Mathématiques
samantha59410
Question
E= (x-1)² -(x-1) (x-2)
1 Réponse
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1. Réponse mohayati2006
E= (x-1)² -(x-1) (x-2)
=(X-1)(X-1-(X-2))
=(X-1)(X-1-X+2)
=(X-1)(1)
=(X-1)
ou bien
E=x²-2X+1-(X²-2X-X+2)
=x²-2X+1-X²+3X-2
=X-1