Réponse :
-2x - 8 = -2 ( x + 4 )
x² + 5x = x ( x +5 )
-6x² -12x = -6x ( x +2 )
-3x + 6 =3 ( -x + 2 )
3x -x² = x ( 3 -x )
-2x² +4x = 2x ( -x +2 )
voila !
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Réponse :
-2x - 8 = -2 ( x + 4 )
x² + 5x = x ( x +5 )
-6x² -12x = -6x ( x +2 )
-3x + 6 =3 ( -x + 2 )
3x -x² = x ( 3 -x )
-2x² +4x = 2x ( -x +2 )
voila !