Question

x^3-x^2-x+1 para x=-1​

Answer 1

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

Answer 2

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