x=1+1/√2 find (x-1/x)^3
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Answered by
2
Correct option is
C
8
x=1+
2
now
(x−(
x
1
))
3
=(1+
2
−(
1+
2
1
))
3
=[1+
2
−(
2
+1
1
)×(
2
−1
2
−1
)]
3
=[1+
2
−(
2
−1)]
3
=(1+
2
−
2
+1)
3
=2
3
=8
Answered by
1
Answer:
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