X(x^2-2)=x^3+8 помогите

Question

X(x^2-2)=x^3+8 помогите

Answer 1

Х(х^2-2)=х^3+8
х^3-2х=х^3+8
х^3 - 2x - x^3 = 8
-2x=8
x= -4