Question 1094195
{{{(x+1)(x-6)(x-5)}}}



<pre>
    x         -6   |
----------------------------
    x^2       -6x  |  x
                   |
    -5x       30   | -5
----------------------------

{{{x^2-11x+30}}}
</pre>


second part:

{{{(x+1)(x^2-11x+30)}}}
{{{(x+1)x^2-11x(x+1)+30(x+1)}}}
{{{x^3+x^2-11x^2-11x+30x+30}}}
{{{highlight(x^3-10x^2+19x+30)}}}