Réponses

  • Utilisateur Brainly
2013-08-13T08:19:27+02:00

A = ( x+5)² -7x (x+5)

    =(x+5)(x+5-7x)

    =(x+5)(-6x+5)

 

A=(x+5)(5-6x)

  =5x-6x²+25-30x

  =-6x²-25x+25