\\[ \\begin{array}{l} x_{1}=11 x_{1}+9 x_{2} \\quad x_{1}(0)=8 \\\\ x_{2}^{2}=9 x_{1}+11 x_{2} \\quad x_{2}(0)=1 \\\\ x_{2}: \\quad x_{2}=\\frac{1}{9}\\left(x_{1}^{\\prime}-11 x_{1}\ ight) \\\\ \\left(\\frac{1}{9}\\left(x_{1}^{2}-\\| x_{1}\ ight)=9 x_{1}+\\frac{11}{9}\\left(x_{1}-11 x_{1}\ ight)\ ight. \\end{array} \\] h sudes by \\( 9: \\quad x_{1}^{3}-11 x_{1}=81 x_{1}+11 x_{1}-121 x_{1} \\) intiate ne turms: \\( x_{i}^{j}-22 x_{1}^{\\prime}+40 x_{1}=0 \\) \\[ \\therefore\\left(x_{1}-2\ ight)\\left(x_{1}-20\ ight)=0 \\]