Question

rationalise the denominator of :
$\frac{1}{(3 + \sqrt{5)} }$
​

Answer 1

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Answer 2

Answer:

$\frac{1}{3 + \sqrt{5} }$

$\frac{1}{3 + \sqrt{5} } \times \frac{3 - \sqrt{5} }{3 - \sqrt{5} }$

$\frac{3 - \sqrt{5} }{( {3 }^{2} - ( \ { { \sqrt{5} }^{2} }) }$

$\frac{3 - \sqrt{5} }{9 - 5}$

$\frac{3 - \sqrt{5} }{4}$

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