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Sagot :

ALICEALICE57

Réponse:

a-

9y-63

9(y-7)

b_

12y-42

6(2y-7)

c_

5y+5

5(y+1)

D_

7y-7z

7(y-z)

E_

xy+yz

y×(x+z)

F_

x ou carre +3x

x×(x+3)

mais la deuxieme photos n'est pas claire

JOYE310106

Explications étape par étape:

a) 9y-63 b) 12y-42 c) 5y+5 d) 7y-7z e) xy+yz f) x^2+3x

= 9×y-9×7 = 6×2y-6×7 = 5×y+5×1 = 7×y-7×2 = x×y+y×z = x×x+3×x

=9 (y-7) = 6 (2y-7) = 5 (y+1) = 7(y-z) = y (x+z) = x (x+3)

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