Question 66669
Factor:
{{{64a^3c^6 + x^6y^9}}} As you can see, the two terms have no common factors so this expression is not factorable!
A second look shows that the first term is a cube {{{(4ac^2)^3}}} but the second term is not! If the exponent of the y had been 8 or 27, then the expression woul have been factorable as the sum of two cubes.