Question

Caucule o valor
x³-x²-x+1, para x = -1

Answer 1

$x {}^{3} - x {}^{2} - x + 1$
Substituindo x=-1
$( - 1) {}^{3} - ( - 1) {}^{2} - ( - 1) + 1 \\ - 1 - (1) + 1 + 1 \\ - 1 - 1 + 1 + 1 \\ - 2 + 2 = 0$