Use a polynomial identity to factor the expression [math]x^3 + 125[/math].
[list=1] [*]Determine which identity is written in the same form as the given expression. [*]Replace [i]a[/i] and [i]b[/i] in the identity with the terms in the given expression. [*]Simplify the expression by finding any products and evaluating any exponents. [/list]