Question

1/√7-√5
RATIONALIZE THE DENOMINATOR ​

Answer 1

Answer:

-1.858103504

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Answer 2

Answer:

$\frac{1}{ \sqrt{7 } - \sqrt{5} } = \frac{1}{ \sqrt{7} - \sqrt{5} } \times \frac{ \sqrt{7} + \sqrt{5} }{ \sqrt{7} + \sqrt{5 } } \\ = \\ \frac{ \sqrt{7} + \sqrt{5} }{7 - 5} = \\ \frac{ \sqrt{7} + \sqrt{5} }{7 - 5} \\ = \frac{ \sqrt{7} + \sqrt{5} }{2}$

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