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Sagot :

SVANT

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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