Question 1174997
<pre>
{{{(18-2x^3+9x)-(4-x^2-3x^3+11x)}}}

{{{18-2x^3+9x-4+x^2+3x^3-11x)}}}

{{{x^3 + x^2 - 2x + 14}}}

That's all you can do with it.  It doesn't factor. Did you copy it correctly?

Edwin</pre>