Question 55948
You didn't give us instructions.  This is what you do if you were asked to simplify:
{{{x(x^2+4x)-2x^2}}}
{{{x(x^2)+x(4x)-2x^2}}}
{{{x^3+4x^2-2x^2}}}
{{{x^3+2x^2}}}
Happy Calcualting!!!