Question 738255
x2...you write as x^2  and put it in curly parentheses, three on left side and three on right side and you will get it like this 

{{{(x  - 5)(x^2   +   5x   +   25)}}} ..now multiply each term from firs parentheses with each term from second parentheses

{{{x*x^2 -5*x^2 + 5x*x-5*5x + 25*x-5*25}}} 

{{{x^3 -5x^2 + 5x^2-25x + 25x-125}}} 

{{{x^3 -cross(5x^2) + cross(5x^2)-cross(25x) + cross(25x)-125}}} 

{{{x^3 -125}}}