Question

1)  3-√2/ 1+√2
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Answer 1

$\frac{3 - \sqrt{2} }{1 + \sqrt{2} } = \\ \\ - (3 - \sqrt{2} ) \times (1 - \sqrt{2} ) = \\ \\ - (3 - 3 \sqrt{2} - \sqrt{2} + 2) = \\ \\ - (5 - 4 \sqrt{2} ) = \\ \\ - 5 + 4 \sqrt{2}$