Respostas

2013-11-29T11:34:12-02:00
f(x)=3x²-2x
f(1/2)=3.1/2²-2.1/2
x=3.1/4-2/2
x=3/4-2/2               mmc de 4 e 2 = 4
x=3/4-4/4
x=-1/4
(x)=-1/4