Posted by shawn on .
divide.x^4+x^280/x+3

math 
Reiny,
31 0 1 0 80
...... 3 930 90
.....13 1030 10
the above is to show the algorithm of synthetic division. It is hard to show a nice matrix in this forum
my answer represents x^3  3x^2 + 10x  30 with a remainder of 10
the following page shows how to do it using long algebraic division 
math oops 
Reiny,
forgot to post the webpage
http://www.sosmath.com/algebra/factor/fac01/fac01.html