Răspunsuri

  • Utilizator Brainly
2014-02-22T09:48:43+02:00
F(x)=ax²+bx+c.
f(-1)=a-b+c=0
f(1)=a+b+c=0
f(2)=4a+2b+c=6
Din primele doua ecuatii rezulta: 2b=0 ⇒ b=0, a=-c.
4a+2b+c=4a+0-a=3a=6, a=2, c=-2.
f(x)=2x²-2.
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