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Gbgfhy
@Gbgfhy
May 2019
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Aider moi svp
Reconnaître une différence de deux carré et factoriser
À= ( X+1) au carré -4
B= ( x-2) au carré -9
C=( 3x-1) au carré -1
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Verified answer
Bonjour,
ttes sont de la forme a²-b² qu'on facto (a-b)(a+b)
À= ( X+1) au carré -4
a² =(x+1)², a =(x+1)
b² =4, b = 2
(x+1-2)(x+1+2)=
(x-1)(x+3)
fais les autres c'est pareil
1² = 1
B= ( x-2) au carré -9
C=( 3x-1) au carré -1
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Verified answer
Bonjour,ttes sont de la forme a²-b² qu'on facto (a-b)(a+b)
À= ( X+1) au carré -4
a² =(x+1)², a =(x+1)
b² =4, b = 2
(x+1-2)(x+1+2)=
(x-1)(x+3)
fais les autres c'est pareil
1² = 1
B= ( x-2) au carré -9
C=( 3x-1) au carré -1