যদি \(a=(\sqrt{2}-1)^{\frac{1}{3}}\) হয়, তাহলে \(\left(a-\frac{1}{a}\right)^3+3\left(a-\frac{1}{a}\right)\) এর মান কত?

1
√2
2
2
3
-2
4
-√2

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