What are the possible rational zeros of f(x) = x4 + 2x3 - 3x2 - 4x + 20?

A. 1, 2, 4, 5, 10, 20

B. ± 1, ± 2, ± 3, ± 4, ± 5, ± 6, ± 7, ± 8, ± 9, ± 10, ± 11, ± 12, ± 13, ± 14, ± 15, ± 16, ± 17, ±18, ± 19, ± 20

C. ± 1, ± 2, ± 4, ± 5, ± 10, ± 20

D. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Question

What are the possible rational zeros of f(x) = x4 + 2x3 - 3x2 - 4x + 20?

 A. 1, 2, 4, 5, 10, 20

B.  ± 1, ± 2, ± 3, ± 4, ± 5, ± 6, ± 7, ± 8, ± 9, ± 10, ± 11, ± 12, ± 13, ± 14, ± 15, ± 16, ± 17, ±18, ± 19, ± 20

 C. ± 1, ± 2, ± 4, ± 5, ± 10, ± 20

 D. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

anonymous · Answer

@TuringTest can you help mr please!