Solution
= Solution
Factor the <polynomial> as $(x^2-1)(x^2-2)$. Each factor must vanish, giving all four <roots of a polynomial>:
$$
\boxed{x=1,-1,\sqrt2,-\sqrt2.}
$$
= Solution
Factor the <polynomial> as $(x^2-1)(x^2-2)$. Each factor must vanish, giving all four <roots of a polynomial>:
$$
\boxed{x=1,-1,\sqrt2,-\sqrt2.}
$$