Question

$If  \: \ \textless \ br /\ \textgreater \ x = 1 + \sqrt{2 \: } \: show \: that \: {(x - \frac{1}{x} })^{3} = 8\ \textless \ br /\ \textgreater \ ​$

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Answer 1

Step-by-step explanation:

x=1+√2

we have (x-1/x)³=8

put value of x in the equation

(1+√2-1/1+√2)³

Answer 2

Answer:

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