Réponses

  • Utilisateur Brainly
2014-05-22T17:43:31+02:00
c) (k+6)(k-6) = k²-36

d) (3x+2) = 9x²+12x+4

e) (1-7x)(1+7x) = 1-49x²

f) (3x-8)² = 9x²-48x+64

g) (10y+3)(10y-3) = 100y²-9