\[\left( x^{2} - 2x - 7 \right)^{2} < \left( x^{2} - 6x - 3 \right)^{2}\]
\[(4x - 4)\left( 2x^{2} - 8x - 10 \right) < 0\]
\[8 \cdot (x - 1)\left( x^{2} - 4x - 5 \right) < 0\]
\[8 \cdot (x - 1)(x - 5)(x + 1) < 0\]
\[Ответ:( - \infty;\ - 1) \cup (1;5).\]