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Sagot :

Réponse : EXO 1

A  4

B X

C 7

D 3

E 10

F 3X

EXO 2

A._ 9y-7×9=9(y-7)

B_12y-12×3.5=12(y-3.5)

C_5y+5=5(y+1)

D_7y-7z=7(y-z)

E_xy+yz=y(x+z)

f_X² +3X=X(X+3)

exo 3

P=4x+8=4(x+2)

Q=17d+13d=d(17+13)

R=21v+9vt=v(21+9t)

S=12s-6=6(2s-1)

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