Réponse:
9y-63
9(y-7)
12y-42
6(2y-7)
5y+5
5(y+1)
7y-7z
7(y-z)
xy+yz
y×(x+z)
x ou carre +3x
x×(x+3)
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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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
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)