Question 162888
Factor:
{{{x^3+125}}} Do you recognize this as the sum of two cubes? {{{(x)^3+(5)^3}}}
The sum of two cubes can be factored thus:
{{{A^3+B^3 = (A+B)(A^2-AB+B^2)}}} and in this problem, x = A and 5 = B, so...
{{{x^3+125 = (x+5)(x^2-5x+25)}}}