Réponses

  • Utilisateur Brainly
2014-10-27T11:08:02+01:00
(3x - 4)² - 4(5x - 1)²
= (3x - 4 - 4(5x - 1))(3x - 1 + 5x - 1)
= (3x - 4 - 20x + 4)(8x - 2)
= - 17x(8x - 2)