Question

✓2+1/✓5 rationalisation

Answer 1

$\frac{ \sqrt{2} + 1}{ \sqrt{5} } \\ \frac{ \sqrt{2} + 1 }{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } \\ \frac{ \sqrt{5}( \sqrt{2} + 1) }{ \sqrt{5} \times \sqrt{5} } \\ \frac{ \sqrt{10} + \sqrt{5} }{5}$

Answer 2

By squaring Both numerator and denominator with denominator√5