Question

Question 5 (i)
Rationalize the denominator of $\frac{1}{\sqrt{7}}$ .

Answer 1

$\frac{1}{\sqrt{7}}$

Multiplying $\sqrt{7}$ to numerator and denominator, we get,

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

$=\frac{\sqrt{7}}{7}$