Question

x=1-√2 find (x-1/x)³​

Answer 1

Answer:

8

Step-by-step explanation:

x=1-√2

1/x=1/1-√2*1+√2/1+√2(rationalise)

=1+√2/(1-√2)(1+√2)

=1+√2/-1=-1-√2

(x-1/x)cube=1-√2+1+√2

=(2)cube

=8