Factor completely. If unfactorable, indicate that the polynomial is prime.9k3m - 42k2m2 + 49km3

A. km(3k - 7m)2
B. km(3k + 7m)2
C. (9mk2 + km)(k + 49m2)
D. km(3k - 7m)(3k + 7m)


Answer: A

Mathematics

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