Factoriser : 3(2x-2)+(x+1)(1-x) Montrer toutes les étapes

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Grade: Education Subject: mathematiques
Factoriser : 3(2x-2)+(x+1)(1-x) Montrer toutes les étapes
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Best Answer
(66)
3(2x-2)+(x+1)(1-x)=6(x-1)-(x-1)(x+1)=(x-1)(6-x-1)=(x-1)(5-x)
(123)
3(2x-2)+(x+1)(1-x)
6x-6+(x*1-x*x+1*1-1*x)
6x-x+x-x²+1-x
6x-x+x-x-x²+1
5x-x²+1
-x²+5x+1