Question

simplify the given question​

Answer 1

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$\frac{1}{ \sqrt{2} + 1} + \frac{1}{ \sqrt{2} - 1} \\ = \frac{1}{ \sqrt{2} + 1} \times \frac{ \sqrt{2} - 1}{ \sqrt{2} - 1 } \\ = \frac{ \sqrt{2} - 1}{1} \\ = \sqrt{2} - 1 \\ = \frac{1}{ \sqrt{2} - 1} \times \frac{ \sqrt{2} + 1}{ \sqrt{2} + 1} \\ \frac{ \sqrt{2} + 1}{1} \\ = \sqrt{2} + 1 \\ = now \\ = \sqrt{2} -1 + \sqrt{2} + 1 \\ = 2 \sqrt{2}$

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Answer 2

the answer is given in the attachment above