Completely factor the polynomial or state that the polynomial is prime.9x4 - 3x2 - 20

A. (3x2 + 1)(3x2 - 20)
B. (3x - 4)(3x + 5)
C. (9x2 - 5)(x2 + 4)
D. (3x2 - 5)(3x2 + 4)


Answer: D

Mathematics

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