calculer les expression suivante en justifiant (x-2)² (x-1)(x-4) (x-2)²-(x-1)(x-4)
Mathématiques
nelson01
Question
calculer les expression suivante en justifiant
(x-2)²
(x-1)(x-4)
(x-2)²-(x-1)(x-4)
(x-2)²
(x-1)(x-4)
(x-2)²-(x-1)(x-4)
2 Réponse
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1. Réponse winner123
bonjour
(x- 2)² = x² - 4 x +4
( x - 1) ( x -4) = x² - 4 x - x + 4 = x² - 5 x + 4
(x-2)² - ( x -1) ( x -4) = x² - 4 x + 4 - x² + 5 x -4 = x -
2. Réponse Solene15137
A = (x - 2)²
A = x² - 4x + 4
B = (x - 1) (x - 4)
B = x² - 4x - x + 4
B = x² - 5x + 4
C = (x - 2)² - (x - 1) (x - 4)
C = x² - 4x + 4 - (x² - 4x - x + 4)
C = x² - 4x + 4 - x² + 4x + x - 4
C = x
Avec x = 10
A = (x - 2)²
A = x² - 4x + 4
A = 10² - 4 × 10 + 4
A = 100 - 40 + 4
A = 60 + 4
A = 64
B = (x - 1) (x - 4)
B = x² - 5x + 4
B = 10² - 5 × 10 + 4
B = 100 - 50 + 4
B = 50 + 4
B = 54
C = (x - 2)² - (x - 1) (x - 4)
C = x² - 4x + 4 - x² + 4x + x - 4
C = 10² - 4 × 10 + 4 - 10² + 4 × 10 + 10 - 4
C = 10