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djamilaibe
@djamilaibe
January 2021
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Bonsoir pourriez-vous m aider SVP merci
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maudmarine
Verified answer
Bonsoir,
1)
E = (3x - 7) - (4x + 8) - (9 - 4x) + 100
E = 3x - 7 - 4x - 8 - 9 + 4x + 100
E = 3x - 4x + 4x - 7 - 8 - 9 + 100
E = 3x + 76
F = 4 (6 - 3x) - 7 (6x - 8) - 40
F = 24 - 12x - 42x + 56 - 40
F = - 12x - 42x + 24 + 56 - 40
F = - 56x + 40
2)
Rappel formule périmètre rectangle
:
P = 2 x (Longueur + Largeur)
Donc :
P = 2 * (3x + 2 + 2x + 3)
P = 2 * (5x + 5)
P = 10x + 10
Rappel formule aire rectangle
:
A = Longueur x Largueur
Donc :
A = (3x + 2) (2x + 3)
A = 6x² + 9x - 4x + 6
A = 6x² + 5x + 6
1 votes
Thanks 1
djamilaibe
Merci j en ai encore 3 réduire et développer tu peux m aider merci je les postes
djamilaibe
Cc
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Lista de comentários
Verified answer
Bonsoir,1)
E = (3x - 7) - (4x + 8) - (9 - 4x) + 100
E = 3x - 7 - 4x - 8 - 9 + 4x + 100
E = 3x - 4x + 4x - 7 - 8 - 9 + 100
E = 3x + 76
F = 4 (6 - 3x) - 7 (6x - 8) - 40
F = 24 - 12x - 42x + 56 - 40
F = - 12x - 42x + 24 + 56 - 40
F = - 56x + 40
2)
Rappel formule périmètre rectangle :
P = 2 x (Longueur + Largeur)
Donc :
P = 2 * (3x + 2 + 2x + 3)
P = 2 * (5x + 5)
P = 10x + 10
Rappel formule aire rectangle :
A = Longueur x Largueur
Donc :
A = (3x + 2) (2x + 3)
A = 6x² + 9x - 4x + 6
A = 6x² + 5x + 6