Question

$\frac{ \sqrt{7} - 1 }{ \sqrt{7} + 1} - \frac{ \sqrt{7} + 1 }{ \sqrt{7} - 1}$
= a+b√7

Find a and b with explanation

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Answer 1

$\frac{ \sqrt{7} - 1 }{ \sqrt{7} + 1 } - \frac{ \sqrt{7} + 1 }{ \sqrt{7} - 1} = a + b \sqrt{7}$

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