Question

как решить дам 25 баллов
$frac{sqrt{5+2sqrt{6}}}{sqrt{5-2sqrt{6}}} -sqrt{1,2}*sqrt{20}$

Answer 1

$frac{ sqrt{5+2 sqrt{6} } }{ sqrt{5-2 sqrt{6} } }- sqrt{1,2}* sqrt{20} = frac{ sqrt{5+2 sqrt{6} } * sqrt{5+2 sqrt{6} } }{ sqrt{5-2 sqrt{6} }* sqrt{5+2 sqrt{6} } } - sqrt{1,2*20} } = frac{( sqrt{5+2 sqrt{6} }) ^{2} }{ sqrt{5 ^{2} -(2 sqrt{6} ) ^{2} } } -$$sqrt{24}= frac{5+2 sqrt{6} }{ sqrt{25-24} }- sqrt{4*6} = frac{5+2 sqrt{6} }{1}-2 sqrt{6}=5+2 sqrt{6} -2 sqrt{6} = 5$