If , , are the roots of x3 – 2×2 + x – 1 = 0, then the value of 1/ + 1/ + 1/ is….

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If , , are the roots of x³ – 2x² + x – 1 = 0, then the value of 1/ + 1/ + 1/ is

Options :-

1. 0
2. -1
3. 1
4. 4

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