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JULIE221179
@JULIE221179
May 2019
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Bonsoir, je suis bloquée sur mon exercice de math pourriez vous m aider svp merci bonne soirée
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loulakar
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1) Périmètre d'un rectangle :
2 x longueur + 2 x largeur
P = 2 * (2x - 1) + 2 * (7 - x)
P = 4x - 2 + 14 - 2x
P = 2x + 12
P = 2 (x + 6)
2) aire d'un rectangle :
Longueur x largeur
A = (2x - 1)(7 - x)
A = 14x - 2x^2 - 7 + x
A = -2x^2 + 15x - 7
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Verified answer
1) Périmètre d'un rectangle :2 x longueur + 2 x largeur
P = 2 * (2x - 1) + 2 * (7 - x)
P = 4x - 2 + 14 - 2x
P = 2x + 12
P = 2 (x + 6)
2) aire d'un rectangle :
Longueur x largeur
A = (2x - 1)(7 - x)
A = 14x - 2x^2 - 7 + x
A = -2x^2 + 15x - 7