Respostas

2013-07-15T13:32:21-03:00
Para x=3

f(x)=3²+2.3-5
y=9+6-5
y=15-5
y=10

2013-07-15T13:34:01-03:00
F(x) = x² + 2x - 5
f(3) = 3² + 2*3 + 5
f(3) = 9 + 6 - 5
f(3) = 10
1 5 1