Find the rationalisation factor
\[ \sqrt{5} – 2 \]
Solution:
\[ \text{Rationalisation factor of } (a – b) = (a + b) \]
\[ \therefore \text{Rationalisation factor of } (\sqrt{5} – 2) = \sqrt{5} + 2 \]
\[ \sqrt{5} – 2 \]
\[ \text{Rationalisation factor of } (a – b) = (a + b) \]
\[ \therefore \text{Rationalisation factor of } (\sqrt{5} – 2) = \sqrt{5} + 2 \]