Factor out a 6: 6(x^3 + 8)
Inside the parentheses is now the sum of two cubes (8=2^3).
(a^3 + b^3) = (a+b)(a^2 -ab + b^2).
a=x and b=2
6((x+2)(x^2 -2x +4))
Hope the solution helped. Sometimes you need more than a solution. Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)