Question

1-$\frac{1}{1- \sqrt{} 2} - \frac{7}{3- \sqrt{2} } + \sqrt{8}$

Answer 1

$\frac{1}{1- \sqrt{2} }- \frac{7}{3- \sqrt{2} } } + \sqrt{8}$

$\frac{1+ \sqrt{2} }{1-2} - \frac{21+7 \sqrt{2} }{9-2} + 2 \sqrt{2}$

$\frac{-1- \sqrt{2} }{1} - \frac{3+ \sqrt{2} }{1} + 2 \sqrt{2}$

$-1- \sqrt{2} - 3 - \sqrt{2} + 2 \sqrt{2}$

$-4$