How to factor $x^3 + 27$
By Emma Valentine •
How to factor $x^3 + 27$
I know cube roots are involved though, I tried to factor out the cube roots but I wasnt able to figure out a way to do so
$\endgroup$ 21 Answer
$\begingroup$Hint:
$$x^3\pm a^3=(x\pm a)(x^2\mp ax+a^2)$$
$\endgroup$