Question 154161
Use the following identity
{{{a^3+b^3=(a+b)(a^2-ab+b^2)}}}
to factor {{{x^3+216}}}.
{{{x^3+216}}}
={{{x^3+6^3}}}
={{{(x+6)(x^2-6x+6^2)}}}
={{{(x+6)(x^2-6x+36)}}}
So the missing part is x+6.