Posted by Ashley R on Friday, September 13, 2013 at 11:29pm.
Factoring Polynomials
(please show step by step)
8z^3 + 512w^3

Math  Reiny, Saturday, September 14, 2013 at 12:06am
I see cubes all over the place, you should be familiar with the factors of A^3 + Bb^3 = (A+B)(A^2  AB + B^2) and its equivalent of A^3  B^3
8z^3 + 512w^3
= (8z^3  512w^3)
=  (5z  8w)(25z^2 + 40wz + 64w^2)