Question

Heya guys solve this
its urgent
rationalise 1/√5-2​

Answer 1

Answer:

1/√5 - 2 × √5 +2/√5+2

√5 + 2 / (√5)^2-4

√5 + 2 / 5-4

√5 +2

hope it's helpful

Answer 2

$Answer \: \\ \\ \frac{1}{ \sqrt{5} - 2} \\ \\ \frac{1}{ \sqrt{5} - 2 } \times \frac{ \sqrt{5} + 2}{ \sqrt{5} + 2} \\ \\ \frac{ \sqrt{5} + 2 }{ (\sqrt{5} - 2) \times ( \sqrt{5} +2)} \\ \\ \frac{ \sqrt{5} + 2}{( \sqrt{5} ) {}^{2} - (2) {}^{2} } \\ \\ \frac{ \sqrt{5} + 2}{5 - 4} \\ \\ \frac{ \sqrt{5} + 2 }{1} \\ \\ \sqrt{5} + 2 \\ \\ NOTE \: \\ \\ (a + b)(a - b) = a {}^{2} - b {}^{2}$