(x^2-1)(x^2+x+1)(x^2-x-1)

Question

(x^2-1)(x^2+x+1)(x^2-x-1)

Answer 1

Х(х^2+2х+1)=2(х+1), х(х+1)^2-(х+1)=0, (х+1)(х^2+х-1)=0, (х+1)(х^2+ч-1, х2 и х3 - корни уравнения (х^2+х-1)=0