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Mehdiiiii
@Mehdiiiii
January 2021
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Bonjour je galère a développer les expressions fluoté j'ai du mal avec eux
Merci
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maudmarine
Verified answer
Bonjour,
B = (x - 3) (x + 5)
B = x² + 5x - 3x - 15
B = x² + 2x - 15
D = (5 - 4x) - 3 - (7x - 3)
D = 5 - 4x - 3 - 7x + 3
D = - 4x - 7x + 5 - 3 + 3
D = - 11x + 5
I = 4x + x [3 - x (7 - x)] - 2x [4x - (x - 2)]
I = 4x + x (3 - 7x + x²) - 2x (4x - x + 2)
I = 4x + 3x - 7x² + x³ - 8x² + 2x² - 4x
I = x³ - 7x² - 8x² + 2x² + 4x - 4x + 3x
I = x
³
- 13x² + 3x
N = (5x - 2)² - (- 2x + 3)²
N = 25x² - 20x + 4 - (4x² - 12x + 9)
N = 25x² - 20x + 4 - 4x² + 12x - 9
N = 25x² - 4x² - 20x + 12x + 4 - 9
N = 21x² - 8x - 5
R = (2x + 1) (2x - 1) - 3 (x - 5)²
R = 4x² - 2x + 2x - 1 - 3 (x² - 10x + 25)
R = 4x² - 2x + 2x - 1 - 3x² + 30x - 75
R = 4x² - 3x² + 30x - 1 - 75
R = x² + 30x - 76
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Mehdiiiii
merci
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May 2019 | 0 Respostas
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Verified answer
Bonjour,B = (x - 3) (x + 5)
B = x² + 5x - 3x - 15
B = x² + 2x - 15
D = (5 - 4x) - 3 - (7x - 3)
D = 5 - 4x - 3 - 7x + 3
D = - 4x - 7x + 5 - 3 + 3
D = - 11x + 5
I = 4x + x [3 - x (7 - x)] - 2x [4x - (x - 2)]
I = 4x + x (3 - 7x + x²) - 2x (4x - x + 2)
I = 4x + 3x - 7x² + x³ - 8x² + 2x² - 4x
I = x³ - 7x² - 8x² + 2x² + 4x - 4x + 3x
I = x³ - 13x² + 3x
N = (5x - 2)² - (- 2x + 3)²
N = 25x² - 20x + 4 - (4x² - 12x + 9)
N = 25x² - 20x + 4 - 4x² + 12x - 9
N = 25x² - 4x² - 20x + 12x + 4 - 9
N = 21x² - 8x - 5
R = (2x + 1) (2x - 1) - 3 (x - 5)²
R = 4x² - 2x + 2x - 1 - 3 (x² - 10x + 25)
R = 4x² - 2x + 2x - 1 - 3x² + 30x - 75
R = 4x² - 3x² + 30x - 1 - 75
R = x² + 30x - 76