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Sagot :


1.A= (6x-6)(2x+1+x+1)
A= (6x-6)x(3x+2)
A= 18xcarré+12x-18x-12
A=18xcarre-6x-12

2. A=(6x-6)x(2x+1+x+1)
A=6(x-1) x(2x+1+x+1)
A=6(x-1)(3x+2)

3.
View image DANCECAM78

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