Question

√7-√5divided by√7+√5​

Answer 1

Answer:

0...

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Answer 2

Answer:

6-√35

Step-by-step explanation:

$\frac{ \sqrt{7} - \sqrt{5} }{ \sqrt{7} + \sqrt{5} } = \frac{ (\sqrt{7} - \sqrt{5} )( \sqrt{7} - \sqrt{5} ) }{( \sqrt{7} + \sqrt{5} )( \sqrt{7} - \sqrt{5} )} = \frac{( { \sqrt{7} ) }^{2} + ( { \sqrt{5}) }^{2} - 2 \times \sqrt{7} \times \sqrt{5} }{( { \sqrt{7}) }^{2} - ( { \sqrt{5} )}^{2} } = \frac{7 + 5 - 2 \sqrt{35} }{7 - 5} = \frac{12 - 2 \sqrt{35} }{2} = \frac{12}{2} - \frac{2 \sqrt{35} }{2} = 6 - \sqrt{35}$