Răspunsuri

  • Utilizator Brainly
2014-01-20T15:24:27+02:00
X^2-x+x^2-1=x(x-1)+(x+1)(x-1)=(x-1)(x+x+1)=(x-1)(2x+1)
Nu exercitiul asta ! Ii 2x^2+3x+1 sau 2x^2-x-1 !!
2x(x+1)+x+1=(x+1)(2x+1)
Cel mai inteligent răspuns!
2014-01-20T15:26:26+02:00
 2x²-x-1=2x²-2x+x-1=2x(x-1)+(x-1)=(x-1)(2x+1)
2x²+3x+1=2x²+2x+x+1=2x(x+1)+ (x+1)=(2x+1)(x+1)
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