Question

Simplify the radical expression by rationalizing the denominator. rt%7B42%7D%20%7D%20" id="TexFormula1" title=" \frac{2}{ \sqrt{42} } " alt=" \frac{2}{ \sqrt{42} } " align="absmiddle" class="latex-formula">

Answer 1

$\bf \cfrac{2}{\sqrt{42}}\cdot \cfrac{\sqrt{42}}{\sqrt{42}}\implies \cfrac{2\sqrt{42}}{(\sqrt{42})^2}\implies \cfrac{2\sqrt{42}}{42}\implies \cfrac{\sqrt{42}}{21}$