Question

Помогите решить алгебру

Answer 1

$frac{5}{5 sqrt{10} } = frac{5 sqrt{10} }{5 sqrt{10} sqrt{10} }= frac{5 sqrt{10} }{5*10}= frac{5 sqrt{10} }{50} = frac{ sqrt{10} }{10 } \ frac{16}{ sqrt{10} - sqrt{2} } = frac{16( sqrt{10}+ sqrt{2}) }{( sqrt{10}- sqrt{2} )( sqrt{10} + sqrt{2} ) }= frac{16( sqrt{10}+ sqrt{2} )}{8} =2( sqrt{10}+ sqrt{2} )=2 sqrt{10}+ \ +2 sqrt{2}$