Question

Calcule o valor numérico de: 2x3 - 4x2 + x - 1 para:
a) x = 0;
b) x = - 1;
c) x = 1/2
d) x = - 1/3

Answer 1

a resposta b

2x3 - 4x2 + x - 1=6-8=-2-(-1)