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Sagot :

Réponse:

2x(120-6x). = 2x X 120 - 2x X 6x

= 240 x - 12x²

6x(40-2x) = 6x X 40 - 6x X 2x

= 240x - 12 x²

Réponse:

(120-6x)×2x=240x-12xaucarre

6x×(40-2x)=240x-12xaucarre

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