DEVEL Développer et simplifier A= -2 +3 (-2x + 1) -(-x+ 3) B = -4+ (5x - 2) - (-3x + 2) C= 5 (x - 2) - 3 (x + 2) - X D = 2 (x - y - 1) - 3 (x + y) + 3y - 3 E =
Mathématiques
belhaja107
Question
DEVEL
Développer et simplifier
A= -2 +3 (-2x + 1) -(-x+ 3)
B = -4+ (5x - 2) - (-3x + 2)
C= 5 (x - 2) - 3 (x + 2) - X
D = 2 (x - y - 1) - 3 (x + y) + 3y - 3
E = 4x (x + y - 1) - y (2x - 1) - x2 - y - 4
svp aide-moi
Développer et simplifier
A= -2 +3 (-2x + 1) -(-x+ 3)
B = -4+ (5x - 2) - (-3x + 2)
C= 5 (x - 2) - 3 (x + 2) - X
D = 2 (x - y - 1) - 3 (x + y) + 3y - 3
E = 4x (x + y - 1) - y (2x - 1) - x2 - y - 4
svp aide-moi
1 Réponse
-
1. Réponse maudmarine
Bonjour
Développer et simplifier
A= -2 +3 (-2x + 1) -(-x+ 3)
A = - 2 - 6x + 3 + x- 3
A = - 6x + x - 2 + 3 - 3
A = - 5x - 2
B = -4+ (5x - 2) - (-3x + 2)
B = - 4 + 5x - 2 + 3x - 2
B = 5x + 3x - 4 - 2 - 2
B = 8x - 8
C= 5 (x - 2) - 3 (x + 2) - X
C = 5x - 10 - 3x - 6 - x
C = 5x - 3x - x - 10 - 6
C = x - 16
D = 2 (x - y - 1) - 3 (x + y) + 3y - 3
D = 2x - 2y - 2 - 3x - 3y + 3y - 3
D = 2x - 3x - 2y - 3y + 3y - 2 - 3
D = - x - 2y - 5
E = 4x (x + y - 1) - y (2x - 1) - x2 - y - 4
E = 4x² + 4xy - 4x - 2xy + y - x² - y - 4
E = 4x² - x² + 4xy - 2xy - 4x + y - y - 4
E = 3x² + 2xy - 4x - 4.