Question

Rationalise the denominator of the following 1/root7 - 2

Answer 1

$\frac{ \sqrt{7} + 2}{3}$

Step-by-step explanation:

$\frac{1}{ \sqrt{7} - 2 } \times \frac{ \sqrt{7} + 2}{ \sqrt{7} + 2}$

$\frac{ \sqrt{7} + 2}{( { \sqrt{7}) - {(2)^{2}}} }$

$\frac{ \sqrt{7} + 2}{7 - 4}$

$\frac{ \sqrt{7} + 2}{3}$

Answer 2

Step-by-step explanation: above mentioned answer is correct