(5x^4+x^3-105x^2+79x+20)/(x-1) = 5x^3 + 6x^2 - 99x - 20
5x^3 + 6x^2 - 99x - 20
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x - 1 (5x^4+x^3-105x^2+79x+20)
5x^4 -5x^3
- +
------------------
0 6x^3 -105x^2+79x+20)
6x^3 - 6x^2
- +
------------------------
0 - 99x^2 + 79x + 20
- 99x^2 + 99x
+ -
------------------------------
0 - 20x + 20
- 20x + 20
+ -
------------------------
0