Réponses

  • Utilisateur Brainly
2014-03-09T19:05:30+01:00
x-1-5x+2
=-4x+1

x-5x +5 +2 (x-1 )
=-4x+5+2x-2
=-2x+3

-5x (x-2) -(3x+2)
=-5x²+10x-3x-2
=-5x²+7x-2
2014-03-09T19:06:59+01:00
Salut :)

x-1-5x+2
4x + 1

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

-5x (x-2) -(3x+2)

-5x x (x) - 5x  x (-2) - 3x - 2
-5x² + 10x - 3x - 2
-5x² + 7x - 2

J'espère t'avoir aidé(e)! :)