Difference between revisions of "1990 OIM Problems/Problem 3"

(Created page with "== Problem == Let <math>f(x) = (x + b)^22-c</math>, be a polynomial with <math>b</math> and <math>c</math> as integers. a. If <math>p</math> is a prime number such that <math...")
 
 
Line 1: Line 1:
 
== Problem ==
 
== Problem ==
Let <math>f(x) = (x + b)^22-c</math>, be a polynomial with <math>b</math> and <math>c</math> as integers.
+
Let <math>f(x) = (x + b)^2-c</math>, be a polynomial with <math>b</math> and <math>c</math> as integers.
  
 
a. If <math>p</math> is a prime number such that <math>p</math> divides <math>c</math> and <math>p^2</math> does not divide <math>c</math>, show that, whatever the integer <math>n</math> is, <math>p^22</math> does not divide <math>f(n)</math>.
 
a. If <math>p</math> is a prime number such that <math>p</math> divides <math>c</math> and <math>p^2</math> does not divide <math>c</math>, show that, whatever the integer <math>n</math> is, <math>p^22</math> does not divide <math>f(n)</math>.

Latest revision as of 01:22, 23 December 2023

Problem

Let $f(x) = (x + b)^2-c$, be a polynomial with $b$ and $c$ as integers.

a. If $p$ is a prime number such that $p$ divides $c$ and $p^2$ does not divide $c$, show that, whatever the integer $n$ is, $p^22$ does not divide $f(n)$.

b. Let $q$ be a prime number other than 2, that divides $c$. If $q$ divides $f(n)$ for some integer $n$, show that for every positive integer $r$ there exists an integer $n'$ such that $q^r$ divides $f(n')$.

~translated into English by Tomas Diaz. ~orders@tomasdiaz.com

Solution

This problem needs a solution. If you have a solution for it, please help us out by adding it.

See also

https://www.oma.org.ar/enunciados/ibe5.htm