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Sagot :

A = (x-2) (x+3)+(4x-1)

= (x+2) (x+3+4-1)

= (x+2)(x+6)

 

c = (5x-3)(2x-5)-x

= (5x-3)(2x-5-x) = (5x-3)(x-5)

 

E = (2x+5)(x-2)+(x-1) = (2x+5)(x-2+x-1) = (2x+5)(2x-3)

G = 4x²+4x-2x = 2x(2x+2x-1) = 2x(4x-1)

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