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Gitifo64
@Gitifo64
May 2019
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Salut, j'ai besoin d'aide pour un exercice de maths, merci d'avance pour les réponses.
Développer et réduire les expressions suivantes.
A= 5x-3(x+12) B= 3x-6+7(2x+4)
C= 2x²+x(4x-5) D= 4x²-x+x(5x-9)
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Verified answer
Par exemple :
5x - 3(x+12) = 5x - 3*x - 3*12 = 5x - 3x - 36 = 2x - 36
3x - 6 + 7(2x+4) = 3x - 6 + 7*2x + 7*4
= 3x - 6 + 14x + 28
= 17x + 22
tu continues ?
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aymanemaysae
Verified answer
Bonjour ;
A = 5x - 3(x + 12) = 5x - 3x - 36 = 2x - 36 .
B = 3x - 6 + 7(2x + 4) = 3x - 6 + 14x + 28 = 17x + 22 .
C = 2x² + x(4x - 5) = 2x² + 4x² - 5x = 6x² - 5x .
D = 4x² - x + x(5x - 9) = 4x² - x + 5x² - 9x = 9x² - 10x .
1 votes
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Verified answer
Par exemple :5x - 3(x+12) = 5x - 3*x - 3*12 = 5x - 3x - 36 = 2x - 36
3x - 6 + 7(2x+4) = 3x - 6 + 7*2x + 7*4
= 3x - 6 + 14x + 28
= 17x + 22
tu continues ?
Verified answer
Bonjour ;A = 5x - 3(x + 12) = 5x - 3x - 36 = 2x - 36 .
B = 3x - 6 + 7(2x + 4) = 3x - 6 + 14x + 28 = 17x + 22 .
C = 2x² + x(4x - 5) = 2x² + 4x² - 5x = 6x² - 5x .
D = 4x² - x + x(5x - 9) = 4x² - x + 5x² - 9x = 9x² - 10x .