Réponses

  • Utilisateur Brainly
2014-04-23T12:00:08+02:00
X²-2x+1+x²+x²+2x+1 = 1325

3x²+2-1325 = 0

3x²-1323 = 0

x² = 441

x = V441  = 21

20,21,22

20²+21²+22² = 400+441+484 = 1325