Math
posted by Chopsticks on .
Ok heres another factoring that I need someone to check
Problem: x^3 + 27
(x^3  3^3)
So I moved the positive and found out what cubed would make 27
Using the forumla: (ab)(a^2+ab+b^2)
(x3) (x^2 + 3x + 9)
Right? Or did I make a mistake?

That is correct, you can always double check your answer by expanding it
(x^3+3x^2+9x3x^29x27)
cancel the ones you need to cancel and you get
(x^327)
=x^3+27 
So I factored it right? Ha thanks alot.