`1,`
`M=``(\frac{1}{1-\sqrt{a}}-\frac{1}{1+\sqrt{a}})(\frac{1}{\sqrt{a}}-1)`
`M=``(\frac{1+\sqrt{a}-1+\sqrt{a}}{(1-\sqrt{a})(1+\sqrt{a})})(\frac{1}{\sqrt{a}}-1)`
`M=``\frac{2\sqrt{a}}{(1-\sqrt{a})(1+\sqrt{a})}.\frac{1-\sqrt{a}}{\sqrt{a}}`
`M=``\frac{2}{1+\sqrt{a}}`
`2,` `a=3-2\sqrt{2}`
`=>` `M=` `\frac{2}{1+\sqrt{3-2\sqrt{2}}}`
`M=``\frac{2}{1+\sqrt{2-2\sqrt{2}+1}}`
`M=``\frac{2}{1+\sqrt{(\sqrt{2}-1)²}`
`M=``\frac{2}{1+\sqrt{2}-1}`
`M=``\frac{2}{\sqrt{2}}`
`M=``\sqrt{2}`
