Question 324030
{{{(x^2+x+3)(x-3) =x(x^2+x+3)-3(x^2+x+3) }}}
{{{(x^2+x+3)(x-3) =(x^3+x^2+3x)-(3x^2+3x+9) }}}
{{{(x^2+x+3)(x-3) =x^3+x^2+3x-3x^2-3x-9}}}
{{{(x^2+x+3)(x-3) =x^3-2x^2-9}}}