# Math Is Fun Forum

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## #1 2007-01-09 08:30:41

unique
Member
Registered: 2006-10-04
Posts: 419

### divison

use synthetic divison to divide x^5 - 7x^3 - 5x^2 + x - 12 by x - 3.

Desi
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## #2 2007-01-09 17:15:03

chemhelper
Member
Registered: 2007-01-09
Posts: 2

### Re: divison

_x^4___3x^3__+2x^2 _+ x_- 2__________________
x-3 | x^5 + 0x^4 - 7x^3 - 5x^2 + x - 12
x^5 - 3x^4
----------------
3x^4 - 7x^3
3x^4 - 9x^3
------------------
2x^3 - 5x^2
2x^3 - 6x^2
----------------
x^2 + x
x^2 + 3x
---------------
-2x - 12
-2x + 6
-----------
-18

So your final answer should be x^4 + 3x^3 + 2x^2  + x - 2 - 18/(x-3)

Last edited by chemhelper (2007-01-09 17:16:00)

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## #3 2007-01-10 07:02:17

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

### Re: divison

Actually, there is a typo,
there is no remainder.
It is +4, not -2.

igloo myrtilles fourmis

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