Respuestas

  • Usuario de Brainly
2013-11-05T22:34:47+01:00
** \frac{2 \sqrt{5} }{ \sqrt{3} } =  \frac{2 \sqrt{5} \sqrt{3}  }{ 3 }  =  \frac{2 \sqrt{15} }{3}

** \frac{5 \sqrt{3} }{2 \sqrt[4]{5^{3} } } =  \frac{5 \sqrt{3}  \sqrt{5} }{2*5} =  \frac{5 \sqrt{15} }{10} =  \frac{ \sqrt{15} }{2}

** \frac{4}{2- \sqrt{2} } =  \frac{4*(2+\sqrt{2} )}{ (2-\sqrt{2})*(2+ \sqrt{2} ) } =  \frac{8+ 4\sqrt{2} }{4-2} =  \frac{8+ 4\sqrt{2}}{2} = 4+2 \sqrt{2}

espero que te sirva
saludos!!