Factoriser l’expression: 3x+21= 7-7x= (4x+1)(x+9)-(6x-5)(4x+1)=
Mathématiques
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Question
Factoriser l’expression:
3x+21=
7-7x=
(4x+1)(x+9)-(6x-5)(4x+1)=
3x+21=
7-7x=
(4x+1)(x+9)-(6x-5)(4x+1)=
1 Réponse
-
1. Réponse Vins
bonjour
3 x + 21 = 3 ( x + 7 )
7 - 7 x = 7 ( 1 - x )
( 4 x + 1 ) ( x + 9 - 6 x + 5 )
= ( 4 x + 1 ) ( - 5 x + 14 )