Aptitude | Algebra | Question 6

If the value of b² + ¹⁄_b² = 1, then find the value of b³ + ¹⁄_b³

(A)

-1/12

(B)

-2

(C)

-4

(D)

None of the above

Answer: (D)

Explanation:

E = (b + 1⁄b)(b2 - 1 + 1⁄b2)

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