Respostas

2013-05-21T09:22:16-03:00

f(x)=x²+5x+c e se f(0)=7


f(0)=0²+5*0+c=7

c=7

2 5 2
2013-05-21T09:31:32-03:00

F(X)= X²+5X+C                   substitua o 7 pelos "x"

f(0)= 7²+5.7+c

f(0)= 49+35+c

c= - 84

1 3 1