Question

Решите неравенство х^3 +x^2-x-1=0

Answer 1

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

x=-1

x^{2}-1=0
x^{2}=1

x=+-1

ответ-1,1