Factor.81k3m - 375m4
A. (9km - 15m2)(9k2 + 25m2)
B. 3m(27k - 5m)(k2 + 15km + 25m2)
C. 3m(3k - 5m)(9k2 + 15km + 25m2)
D. 3m(3k + 5m2)(9k2 - 15km + 25km2)
Answer: C
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