Math, asked by uzumakiai, 1 year ago

1/(1+√5+√3) - rationalise​

Answers

Answered by amankumaraman11
3

 \frac{1}{1 +  \sqrt{5} +  \sqrt{3}  }  \\  \\  \\  \frac{1(1 +  \sqrt{5}  -  \sqrt{3} )}{(1 +  \sqrt{5}  +  \sqrt{3} )(1 +  \sqrt{5} -  \sqrt{3}  )}  \\  \\  \frac{1 +  \sqrt{5}  -  \sqrt{3} }{ {(1 +  \sqrt{5} )}^{2}  -  {( \sqrt{3} )}^{2} }  \\  \\  \frac{1 +  \sqrt{5} -  \sqrt{3}  }{1 + 5 + 2 \sqrt{5}  - 3}  \\  \\   \frac{1 +  \sqrt{5}  -  \sqrt{3} }{3 + 2 \sqrt{5} }  =  \frac{1 +  \sqrt{5} -   \sqrt{3} (3 - 2 \sqrt{5} )}{ {(3)}^{2}  -  {(2 \sqrt{5}) }^{2} }  \\  \\  \frac{3 + 3 \sqrt{5}  - 3 \sqrt{3} - 2 \sqrt{5}   - 10 + 2 \sqrt{15} }{9 - 20}  \\  \\  \frac{ - 7 \sqrt{5} - 3 \sqrt{3} + 2 \sqrt{5}   }{ - 11}

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