Question

If x=1+ √ 2,find the value of (x-1/x)

Answer 1

Answer:

==> x-1/x                                        

==> ($x^{2}$ -1 ) / x                                        

==> ( (1 + $\sqrt{2}$ ) - 1 / 1 + $\sqrt{2}$)     (Replacing values of x)

==> 1 + 2 + 2$\sqrt{2}$ -1 / 1 + $\sqrt{2}$

==> 2 + $\sqrt{2}$ / 1 + $\sqrt{2}$

==> 2 (1 + $\sqrt{2}$) / 1 + $\sqrt{2}$

==> 2

∴ x-1 / x

==> 2

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Answer 2

Answer:

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