Math, asked by gbhavana797, 7 months ago

Rationalise the denominator (√7-√5)÷(√7+√5)​

Answers

Answered by SUMIT86486
10

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

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