Question

Rationalize the denominator 1/2+√5

Answer 1

Answer:

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Answer 2

Hey mate!!!

Here's ur answer....

To rationalize the denominator of a fraction we will multiply it by by the number in denominator but after changing sign.

$\frac{1}{2 + \sqrt{5} } \times \frac{2 - \sqrt{5} }{2 - \sqrt{5} } \\ \\ \frac{2 - \sqrt{5} }{ {(2)}^{2} - {( \sqrt{5} )}^{2} } \\ \\ \frac{2 - \sqrt{5} }{4 - 5} \\ \\ \frac{2 - \sqrt{5} }{ - 1} \\ \\ - 2 + \sqrt{5}$

Hence the denominator is rationalised...

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