Eisenstein's criterion

Revision as of 21:29, 3 November 2013 by Willalphagamma (talk | contribs) (Created page with "Let <math>a_0, a_1, ... ,a_n</math> be integers. Then, '''Eisenstein's Criterion''' states that the polynomial <math>a_nx^n+a_{n-1}x^{n-1}+ ... + a_1x+a_0</math> cannot be facto...")
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Let $a_0, a_1, ... ,a_n$ be integers. Then, Eisenstein's Criterion states that the polynomial $a_nx^n+a_{n-1}x^{n-1}+ ... + a_1x+a_0$ cannot be factored into the product of two non-constant polynomials if:

$1) p$ is a prime which divides each of $a_0,a_1,a_2,...,a_{n-1}$

$2) a_n$ is not divisible by $p$

$3) a_0$ is not divisible by $p^2$

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