FACTORISATION: A = 36 - 25x² B = 2i (i + 1) + 2i (2 + i) C = b² - 10b + 25 D = (5x + 1)² + 81 Merci!
Mathématiques
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Question
FACTORISATION:
A = 36 - 25x²
B = 2i (i + 1) + 2i (2 + i)
C = b² - 10b + 25
D = (5x + 1)² + 81
Merci!
A = 36 - 25x²
B = 2i (i + 1) + 2i (2 + i)
C = b² - 10b + 25
D = (5x + 1)² + 81
Merci!
1 Réponse
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1. Réponse maudmarine
A = 36 - 25x²
A = (6 - 5x) (6 + 5x)
B = 2i (i + 1) + 2i (2 + i)
B = 2i (i + 1 + 2 + i)
B = 2i (3 + 2i)
C = b² - 10b + 25
C = b x b - 2 x b x 5 + 5²
C = (b - 5)²
D = (5x + 1)² + 81
D = (5x + 1 - 9) (5x + 1 + 9)
D = (5x - 8) (5x + 10)