[tex]a = \frac{2}{3 + \sqrt{7} } + \sqrt{ {(1 - \sqrt{7} )}^{2} } [/tex]
[tex]a = \frac{2(3 - \sqrt{7} )}{(3 + \sqrt{7} )(3 - \sqrt{7} )} + |1 - \sqrt{7} | [/tex]
[tex]a = \frac{6 - 2 \sqrt{7} }{ {3}^{2} - {( \sqrt{7}) }^{2} } + \sqrt{7} - 1[/tex]
[tex]a = \frac{6 - 2 \sqrt{7} }{9 - 7} + \sqrt{7} - 1[/tex]
[tex]a = \frac{6 - 2 \sqrt{7} }{2} + \sqrt{7} - 1[/tex]
[tex]a = \frac{6 - 2 \sqrt{7} + 2 \sqrt{7} - 2 }{2} [/tex]
[tex]a = \frac{4}{2} [/tex]
[tex]a = 2[/tex]
[tex]b = {(1 + \sqrt{2} )}^{2} - \frac{4}{ \sqrt{2} } [/tex]
[tex]b = {1}^{2} + 2 \times 1 \times \sqrt{2} + {( \sqrt{2}) }^{2} - \frac{4 \sqrt{2} }{2} [/tex]
[tex]b = 1 + 2 \sqrt{2} + 2 - 2 \sqrt{2} [/tex]
[tex]b = 3[/tex]
[tex] \frac{x}{100} \times a = b[/tex]
[tex] \frac{x}{100} \times 2 = 3[/tex]
[tex] \frac{x}{50} = 3[/tex]
[tex]x = 50 \times 3[/tex]
[tex]x = 150 \: \%[/tex]
