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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​

Sagot :

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.

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