The three roots of the cubic equation x 3 +9x 2 -x-9=0 is

CA Foundation · Quantitative Aptitude · MTP · January 2025
The three roots of the cubic equation x 3 +9x 2 -x-9=0 is
(A) A. -1, +1, and 9
(B) B. -1, +1 and -9
(C) C. -1, +1 and 1 / 9
(D) D. -1, -1 and 9

Suggested Answer and Working Notes:

Correct Answer: Option (B)

B. -1, +1 and -9

Topics: Part-A: Business Mathematics

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