Question

5/√10


....... rationalise ............

Answer 1

$\frac{5}{ \sqrt{10} } \\ \\ = \geqslant \frac{5}{ \sqrt{10} } \times \frac{ \sqrt{10} }{ \sqrt{10} } \\ \\ = \geqslant \frac{5 \sqrt{10} }{10} \\ \\ = \geqslant \frac{ \sqrt{10} }{2}$

Answer 2

Explanation:

REFER THE ATTACHMENT....