Question

4/ root 5. Rationalise the denominater

Answer 1

Answer:

$\frac{4\sqrt{5} }{5}$

Step-by-step explanation:

Multiple both numerator and denominator with $\sqrt{5}$

∴ $\frac{4}{\sqrt{5} } = \frac{4}{\sqrt{5} } . \frac{\sqrt{5} }{\sqrt{5} } = \frac{4 \sqrt{5} }{5}$