Question 1153255
<pre>

          x^2    -4x    -5
      ___________________________________
x-5   |   x^3   -9x^2   15x   25
      |
      |   x^3  -5x^2
      |---------------
          0    -4x^2    15x
               -4x^2    20x
              -------------
                0      -5x   25
                       -5x   25
                      -----------
                        0     0

</pre>
The quotient, having no remainder, is  {{{x^2-4x-5}}}.