[tex] \frac{1}{1- \sqrt{2} }- \frac{7}{3- \sqrt{2} } } + \sqrt{8} [/tex]
[tex] \frac{1+ \sqrt{2} }{1-2} - \frac{21+7 \sqrt{2} }{9-2} + 2 \sqrt{2} [/tex]
[tex] \frac{-1- \sqrt{2} }{1} - \frac{3+ \sqrt{2} }{1} + 2 \sqrt{2}[/tex]
[tex]-1- \sqrt{2} - 3 - \sqrt{2} + 2 \sqrt{2} [/tex]
[tex]-4[/tex]
