Website Statistics Factorisez lorsque cela est possibleAx 5x1 10x 2Bx 9x 6 3x2Cx 2x52x 2xDx xx2x2 au carré

Factorisez lorsque cela est possible.

A(x) = (5x-1)* + 10x -2
B(x) = 9x + 6 - (3x+2)*
C(x) = (2x+5)(2-x) - 2+x
D(x) = x(x+2)-x-2

* = au carré

Répondre :

A(x) = (5x-1)* + 10x -2
       =(5x-1)(5x-1+2)
       =(5x-1)(5x+1)

B(x) = 9x + 6 - (3x+2)*
       =(3x+2)(3-3x-2)
       =(3x+2)(-3x+1)

C(x) = (2x+5)(2-x) - 2+x
       =(2-x)(2x+5-1)
       =(2-x)(2x+4)

D(x) = x(x+2)-x-2

       =(x+2)(x-1)

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