Respostas

2014-01-29T10:01:10-02:00
P(x) = -4x³+2x²+x-1
p(1) = -4.1³+2.1²+1-1
p(1) = -4+2+0
p(1) = -2

p(2) = -4.2³+2.2²+2-1
p(2) = -4.8 + 2.4 + 1
p(2) = -32 + 8 + 1
p(2) = -24 + 1
p(2) = -23

p(-3) = -4.(-3)³+2.(-3)²+(-3)-1
p(-3) = -4.(-27) +2.9 + (-4)
p(-3) = 108+18-4
p(-3) = 122

p(0) = -1 (abandonar os termos que tem x)