Question

Rationalise the denominator of the following. 4/root5–root2​

Answer 1

Step-by-step explanation:

$\frac{4}{ \sqrt{5} - \sqrt{2} } \\ = \frac{4( \sqrt{5} + \sqrt{2}) }{5 - 2} \\ = \frac{4 \sqrt{5} + 4 \sqrt{2} }{3}$

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Answer 2

Step-by-step explanation:

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