SOLUTION: I have one more question please and I just don't understand it at all. How do I factor completely 64-27u^3 ? Please help!!!!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I have one more question please and I just don't understand it at all. How do I factor completely 64-27u^3 ? Please help!!!!      Log On


   

Question 87771: I have one more question please and I just don't understand it at all. How do I factor completely 64-27u^3 ? Please help!!!!
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Using a rule of cubes:
64 - 27u^3
(4)^3 - (3u)^3
(4 - 3u)(16 + 12u + 9u^2)