Question

racionalize 2/raiz de 20?

Answer 1

$\frac{2}{ \sqrt{20} } = \frac{2 \sqrt{20} }{ \sqrt{20} \sqrt{20} } = \frac{2 \sqrt{20} }{20} = \frac{ \sqrt{20} }{10}$

Espero ter ajudado.

Answer 2

2/√20= 2√20/√20.√20= 2√20/20= √20/10