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Larozedu13
@Larozedu13
April 2019
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Bonjour vous pourrez m'aider pour l'exercice 5 s'ils vous plait
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Bonjour,
1)a factorisée
b factorisée
2a) VRAI (x+3)(x+3-2) = (x+3)(x+1)
b) VRAI x²+x+3x+3 = x²+4x+3
3) 2x²-5x+4x-10=
2x²-x-10
4) (x-5)(x-5-x-4)=
(x-5)(-9) =
-9(x-5)
5) 2(1/2)61/2 =
2/2-1/2 = 1/2
1/2 n'est pas solution de l'équation
6) (a+b)²-(a-b)²=
(a²+2ab+b²)-(a²-2ab+b²) =
a²+2ab+b²-a²+2ab-b² =
4ab
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Verified answer
Bonjour,1)a factorisée
b factorisée
2a) VRAI (x+3)(x+3-2) = (x+3)(x+1)
b) VRAI x²+x+3x+3 = x²+4x+3
3) 2x²-5x+4x-10=
2x²-x-10
4) (x-5)(x-5-x-4)=
(x-5)(-9) =
-9(x-5)
5) 2(1/2)61/2 =
2/2-1/2 = 1/2
1/2 n'est pas solution de l'équation
6) (a+b)²-(a-b)²=
(a²+2ab+b²)-(a²-2ab+b²) =
a²+2ab+b²-a²+2ab-b² =
4ab