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Sagot :

Réponse:

5(2x+3)=10x+15

2x(3x-5y)=6x2-10y

28x99=28(100-1)=2800-28=2772

123x201=123(200+1)=24600+123=24723

5x2x+5x3=5(2x+3)

4t2-16t=4t(t-4)

28abc-21bc+14ab=7b(4ac-3c+2a)

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