Réponse:

A=x²+6x-x

A=x²+5x

B=xy-2x+xy

B=2xy-2x

C=3x²+12x-6x²

C=-3x²+12x

D= 9x³-54x+2x²

D=9x³+2x²-54x

E=15x+25x²+5x+x²+8x²+4x

E=34x²+24x

F=21x²-35x-48x-42x²

F=-21x²-83x

G=27+81x+28x²-48x³-33x

G=-48x³+28x²+48x+27

Bonjour,

A = x (x + 6) - x

A = x² + 6x - x

A = x² + 5x

B = x (y - 2) + xy

B = xy - 2x + xy

B = 2xy - 2x

C 3x (x + 4) - 6x²

C = 3x² + 12x - 6x²

C = - 3x² + 12x

D = 9x (x² - 6) + 2x²

D = 9x³ - 54x + 2x²

D = 9x³ + 2x² - 54x

E = 5x (3 + 5x) + x (5 + x) + 4x (2x + 1)

E = 15x + 25x² + 5x + x² + 8x² + 4x

E = 34x² + 24x.

F = 7x (3x - 5) - 6x (8 + 7x)

F = 21x² - 35x - 48x - 42x²

F = - 21x² - 83x

G = 9 (3 + 9x) + 4x² (7 - 12x) - 11x (- 5 + 8)

G = 27 + 81x + 28x² - 48x³ + 55x - 88x

G = - 48x³  + 28x² + 48x + 27.