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Morgane971
@Morgane971
April 2019
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Pourriez vous m'aider (c'est l'exercice 75)
mercii
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Bonsoir ,
Ex 75 :
B = 121x² + 22x + 1
B = (11x)² + 2 × 11 × 1 + 1²
B = (11x+1)²
C = 81 - 9x²
C = 9² - 9x²
C = (9+9x) (9-9x)
E = -30x + 25x² + 9
E = 2 × 5 × 3 + (5x)² + 3²
E = (5x-3)²
F = 144x² - 16
F = (12x)² - 4²
F = (12x+4) (12x-4)
H = -4 + 9x²
H = 9x² - 4
H = (3x)² - 2²
H = (3x-2) (3x+2)
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Bonjour Est ce que vous pourriez m'aider sur cet exo svp Merciii
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Bonjour je dois le rendre lundi (exo de maths 2nde)je n'est vraiment pas compris merci de m'aider
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Bonsoir, J'ai besoin de votre aide pour l'exo Merci d'avance
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Ex 75 :
B = 121x² + 22x + 1
B = (11x)² + 2 × 11 × 1 + 1²
B = (11x+1)²
C = 81 - 9x²
C = 9² - 9x²
C = (9+9x) (9-9x)
E = -30x + 25x² + 9
E = 2 × 5 × 3 + (5x)² + 3²
E = (5x-3)²
F = 144x² - 16
F = (12x)² - 4²
F = (12x+4) (12x-4)
H = -4 + 9x²
H = 9x² - 4
H = (3x)² - 2²
H = (3x-2) (3x+2)