Respostas

2014-06-22T15:10:44-03:00
F(x)= x² -4x +3

f(0)
f(0)= (0)² -4 .0 +3
f(0)= 0 -0 +3
f(0)= 3

f(-1)
f(-1)= (-1)² -4 .(-1) +3
f(-1)= 1 +4 +3
f(-1)= 8


2014-06-22T15:11:28-03:00
f(x) = x² - 4x +3
f(0)=0²-4x0+3
f(0)=0-0+3
f(0)=3

f(x) = x² - 4x +3
f(-1)=(-1)²-4x(-1)+3
f(-1)=1+4+3
f(-1)=8