Question

a expressão (5+raiz de 3 ) ( 5-raiz de 3 ) sobre ( raiz de 2 +1 ) (raiz de 2 -1 )

Answer 1

$\dfrac{(5+\sqrt{3})\times(5-\sqrt{3})}{(\sqrt{2}+1)\times(\sqrt{2}-1)}=\dfrac{25-3}{2-1}=\dfrac{22}{1}=22$