SOLUTION: How do I factor, 64a^4-27a (^4=to the fourth power)

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Question 69458: How do I factor,
64a^4-27a (^4=to the fourth power)
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
64a^4 - 27a
a(64a^3 - 27)
a((4a)^3 - (3)^3)
a(4a - 3)(16a^2 + 12a + 9)