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Let α and β be the roots of the equation x 2 + x + 1 = 0. Then for y ≠ 0 in R, α + β β + α β α + y 1 1 y 1 y is equal to :

1. y(y 2 – 3)
2. y 3
3. y(y 2 – 1)
4. y 3 – 1

Correct answer: y 3

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