Réponses

  • Utilisateur Brainly
2014-04-23T18:49:47+02:00
Factoriser 

A = (4x– 1)² – (2x + 3)²
   =(4x-1-2x-3)(4x-1+2x+3)
   =(2x-4)(6x+2)
   =4(x-2)(3x+1)

B = x³ – 16x
   =x(x²-16)
   =x(x-4)(x+4)

C = 25x²– 1 – (4x – 3)(5x + 1)

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