Question

Rationalize the denominators of $\frac{1}{\sqrt{7}}$

Answer 1

To rationalize the denominator we have to multiply and divide $\frac{1}{\sqrt{7}}$ by $\sqrt{7}$

$\Rightarrow \frac{1}{\sqrt{7}}\times \frac{\sqrt{7}}{\sqrt{7}}=\frac{\sqrt{7}}{7}$

Hence we get $\frac{\sqrt{7}}{7}$ after rationalization.