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If a=(2-sqrt(5))/(2+sqrt(5)) and b=(2+sq...

If `a=(2-sqrt(5))/(2+sqrt(5))` and `b=(2+sqrt(5))/(2-sqrt(5)),` find `a^2-b^2`

A

`-144sqrt(5)`

B

`144sqrt(5)`

C

`8sqrt(5)`

D

`-18`

Text Solution

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The correct Answer is:
A
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