Math, asked by CeceBisht, 9 months ago


 \frac{4 -  \sqrt{5} }{4 +  \sqrt{5} }  \times  \frac{4  +  \sqrt{5} }{4 -  \sqrt{5}  }
evaluate​

Answers

Answered by Anonymous
2

1 is the answer

 \frac{4 -  \sqrt{5} }{4 +  \sqrt{5} }  \times  \frac{4 +  \sqrt{5} }{4 -  \sqrt{5} }  \\  \frac{16 - 5}{16 - 5}  \\  \frac{11}{11}  \\ 1

Answered by Anonymous
4

Answer:

by identity a square-b square =(a+b) (a-b)

 \frac{4 -  \sqrt{5} }{4 -  \sqrt{5} }  \times  \frac{4 +  \sqrt{5} }{4 -  \sqrt{5 } }   \\ =  \frac{16 - 5}{16 - 5  }  \\  = 1 \\

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