Question

racionalizando o denominador da fração 4/raiz de 2

Answer 1

$\dfrac{4}{ \sqrt{2} } \to~~~~ \dfrac{4}{ \sqrt{2} }\times \dfrac{\sqrt{2}}{ \sqrt{2} }\to~~~~ \dfrac{4\sqrt{2}}{ \sqrt{4} }\to~~~~ \dfrac{4\sqrt{2}}{ 2 }\to~~~~ \large\boxed{2\sqrt{2}}$