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Exercices Développer et réduire
A = -(x+3)
B = (x-3) (5x + 2)
C = (4x+1) (3x-5)
D = (5x-3) (x-1) -3x + 4

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Répondre :

Bonjour,

A = -(x+3)

= -x -3

B = (x-3) (5x + 2)

=5x² +2x -15x -6

=5x² -13x-6

C = (4x+1) (3x-5)

= 12x² -20x +3x -5

=12x² -17x -5

D = (5x-3) (x-1) -3x + 4

= 5x² -5x -3x +3 -3x +4

= 5x² -11x +7

bonjour

A = - x - 3

B = 5 x² + 2 x - 15 x - 6 = 5 x² - 13 x - 6

C = 12 x² - 20 x + 3 x - 5 = 12 x² - 17 x - 5

D =  5 x² - 5 x - 3 x + 3 - 3 x + 4 = 5 x² - 11 x + 7