$9.260 \sqrt{x^{4}-2 x^{2}+1}>1-x$.

Translate the above text into English, keeping the original text's line breaks and format, and output the translation result directly.

$9.260 \sqrt{x^{4}-2 x^{2}+1}>1-x$.
Solution.

$$
\sqrt{\left(x^{2}-1\right)^{2}}>1-x \Leftrightarrow\left|1-x^{2}\right|>1-x \Leftrightarrow\left[\begin{array} { l } 
{ 1 - x ^ { 2 } > 1 - x , } \\
{ 1 - x ^ { 2 } < -(1 - x) }
\end{array} \Leftrightarrow \left[\begin{array}{l}
0 < x < 1, \\
x < -2 \text{ or } x > 1
\end{array}\right.\right.\right.
$$

Answer: $\quad x \in(-\infty ;-2) \cup(0 ; 1) \cup(1 ;+\infty)$.
