Question

rationalise the denominator and simplify 1/root7-root5​

Answer 1

Answer:

$\frac{1}{ \sqrt{7} - \sqrt{5} }$

$\frac{1 \times (\sqrt{7} + \sqrt{5} ) }{( \sqrt{7} - \sqrt{5})( \sqrt{7} + \sqrt{5}) }$

$\frac{ \sqrt{7} - \sqrt{5} }{(7 - 5)}$

$\frac{ \sqrt{7} - \sqrt{5} }{2}$

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