Answered

22 Écrire plus simplement chaque produit.
A= xx 12 B = 1 xy
C = 0 x x
D= 2y X7 E = 2 X X X 3x F= y x 4 x (2 x y - 1)

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A= xx 12 = 12x²

B = 1 xy  = xy

C = 0 x x  = 0

D= 2y x7 = 14xy

E = 2 x x x 3x = 6x⁴

F= y x 4 x (2 x y - 1)

= 4x²y(2xy - 1)

= 8 x³y² - 4x²y