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Solve this Questionmy previous question please solve​

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ANSWER:

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



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