Question

racionalize os denominadores
 1
------
√5 - 2


√2
--------
√2 + √3

Answer 1

$\frac{1}{ \sqrt{5}-2 } * \frac{ \sqrt{5} +2 }{ \sqrt{5} +2} = \frac{ \sqrt{5} +2}{5 -4}$
$\frac{ \sqrt{2} }{ \sqrt{2}+ \sqrt{3} } * \frac{ \sqrt{2} - \sqrt{3} }{ \sqrt{2}- \sqrt{3} } = \frac{2 \sqrt{3} }{2 - 3}$