SOLUTION: How do you factor this polynomial? 27a^3-64b^3+15a-20b

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: How do you factor this polynomial? 27a^3-64b^3+15a-20b      Log On


   

Question 166803: How do you factor this polynomial?
27a^3-64b^3+15a-20b
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How do you factor this polynomial?
27a^3-64b^3+15a-20b
----------------
There are no ab terms, so separate it into a terms and b terms.
= (27a^3 + 15a) - (64 b^3 + 20b)
= 3a*(9a^2 + 5) - 4b*(16b^2 + 5b)
That's all that can be done (without using complex numbers).
I don't see any advantage - it's not simpler than the original, and it has more terms.