Question 131266
fACTOR:
{{{5X^2-125}}} First, factor a 5.
{{{5(X^2-25)}}} Now you have the difference of two squares: {{{A^2-B^2}}} which can be factored as:{{{(A+B)(A-B)}}}, so applying this to your problem:
{{{5x^2-125 = 5(x+5)(x-5)}}}