Question

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Answer 1

Answer:

( $\sqrt{5}-\frac{1}{\sqrt{5}}$ ) ( $\sqrt{5}-\frac{1}{\sqrt{5}}$ ) = ( $\sqrt{5}$ )² - 2 ×  $\sqrt{5}$  ×  $\frac{1}{\sqrt{5}}$  +  ( $\frac{1}{\sqrt{5}}$ )²

                                   = 5 - 2 +  $\frac{1}{5}$

                                   =  $\frac{16}{5}$

                                   = 3.2 (ANS)

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