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If a= (sqrt5+1)/(sqrt5-1) and b=(sqrt5-1...

If `a= (sqrt5+1)/(sqrt5-1)` and b=`(sqrt5-1)/(sqrt5+1)` then the value of `(a^(2)+ab+b^(2))/(a^2-ab+b^2)` is

A

`3/4`

B

`4/3`

C

`3/5`

D

`5/3`

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The correct Answer is:
b
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