Rekenen met wortels (reeks 5)

Maak de noemer wortelvrij

\(\frac{3}{\sqrt{2}}\)

\(\frac{3}{\sqrt{2}}=\frac{3\cdot \color{red}{\sqrt{2}} }{\sqrt{2}\cdot \color{red}{\sqrt{2}} }=\frac{3\cdot\sqrt{2}}{2}\)