Réponse:
exercice 1
a)2(x²+3x+5)= 2x²+6x+10
b) 6x+12 = 6×x+6×2 = 6(x+2)
c) x+2x = 3x
d) 2x²+2x×3 = 2x×x + 2x×3 = 2x(x+3)
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Réponse:
exercice 1
a)2(x²+3x+5)= 2x²+6x+10
b) 6x+12 = 6×x+6×2 = 6(x+2)
c) x+2x = 3x
d) 2x²+2x×3 = 2x×x + 2x×3 = 2x(x+3)