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Sagot :

LELEKA216

Réponse :

B= 45 - 18x

B= 9 x 5 -9 x 2x

B= 9 (5-2x)

C=8x + 56

C= 8 x 1x +8 x 7

C= 8 (x+7)

D= 7x²-21

D= 7 x 1x²- 7 x 3

D= 7 (x²-3)

E= 15x - 10

E= 5 x 3x - 5 x 2

E= 5 ( 3x-2)

F= 39x-26x²

F= -13x x 3 - -13x x 2x

F=−13x (2x−3)

G= 3x+12

G= 3 x 1x + 3 x 4

G= 3 ( x+4)

H= 15x - 25x²

H=5x x 3 - 5x x 5x

H= -5x -(3- 5x)

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