Synthetic Polymonial Division (1 Viewer)

[currysauce]

I was reading a course summary and come upon this method of polymonial division, i haven't seen it before... has anyone else

e.g.

(5x^3 -17x²-x+11) divided by (x-2)

2 | 5 -17 -1 11
| 10 -14 30 (e.g 2 5's is 10, -17 +10 = -7x2 = -14+-1 =-15....)
-----------------------------
| 5 -7 -15 | -19|

so the equation becomes (x-2) (5x²-7x-15) - 19

 

[rama_v]

Yeah, its a cool method...I remember SlideRule saying something about it b4

 

[dawso]

tis a useful technique, not required but may extend knowledge, http://www.purplemath.com/modules/synthdiv.htm

 

[KFunk]

I find that this explanation is pretty good:

http://en.wikipedia.org/wiki/Ruffini's_rule