Réponse:
1/ aire totale en fonction de x :
A = L × l
A = 4 × x
A =4x
Aire total = 4x + 2
2/ 7x - ( 4x + 2 ) = 3x - 2
7x - 4x - 2 = 3x - 2
3x-2 = 3x -2
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Réponse:
1/ aire totale en fonction de x :
A = L × l
A = 4 × x
A =4x
Aire total = 4x + 2
2/ 7x - ( 4x + 2 ) = 3x - 2
7x - 4x - 2 = 3x - 2
3x-2 = 3x -2