Question

rationalize the denominator of 2/root 7​

Answer 1

Answer:

2/√7×√7/√7=2√7/7 is the answer

Answer 2

Answer:-

$\dfrac{2 \sqrt{7} }{7}$

Given:-

$\dfrac{2}{ \sqrt{7} }$

To find :-

To rationalise the denominator.

Solution :-

$\dfrac{2}{ \sqrt{7} } \times \dfrac{ \sqrt{7} }{ \sqrt{7} }$

Multiply denominator and numerator by √7.

$= \dfrac{2 \sqrt{7} }{ {( \sqrt{7} )}^{2} }$

$= \dfrac{2 \sqrt{7} }{7}$

Hence, the required answer is :$\dfrac{2 \sqrt{7} }{7}$