Respostas

  • Usuário do Brainly
2014-08-31T00:16:25-03:00
  • Usuário do Brainly
2014-08-31T11:49:48-03:00
Olá, Gabrielle !

f(x)=x^2+3x-2

Se x=\dfrac{1}{2}, temos:

f(\frac{1}{2})=\left(\dfrac{1}{2}\right)^2+3\cdot\dfrac{1}{2}-2

f(\frac{1}{2})=\dfrac{1}{4}+\dfrac{3}{2}-2

Veja que, \text{mmc}(4,2,1)=4, logo:

f(\frac{1}{2})=\dfrac{1+6-8}{4}=\dfrac{-1}{4}.

Espero ter ajudado, até mais ^^