Question

simplify √7-1/√7+1-√7+1√7-1

Answer 1

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0 ( ZERO ) ....

Answer 2

Hello Mate!

$\frac{ \sqrt{7} - 1 }{ \sqrt{7} + 1} \times \frac{ \sqrt{7} - 1}{ \sqrt{7} - 1} \\ \frac{7 + 1 - 2 \sqrt{7} }{7 - 1} \\ = \frac{8 - 2 \sqrt{7} }{6} = \frac{4 - \sqrt{7} }{3} \\ \frac{ \sqrt{7} + 1}{ \sqrt{7} - 1} \times \frac{ \sqrt{7} + 1 }{ \sqrt{7} + 1} \\ \frac{7 + 1 + 2 \sqrt{7} }{6} = \frac{4 + \sqrt{7} }{3} \\ \frac{4 - \sqrt{7} }{3} - \frac{4 + \sqrt{7} }{3} \\ \frac{4 - \sqrt{7} - 4 - \sqrt{7} }{3} = - \frac{2 \sqrt{7} }{3}$

Hope it helps☺!✌