MathDB
Problems
Contests
National and Regional Contests
Germany Contests
Bundeswettbewerb Mathematik
1979 Bundeswettbewerb Mathematik
4
Almost Divisible!
Almost Divisible!
Source:
July 16, 2013
algebra
polynomial
Problem Statement
Prove that the polynomial
P
(
x
)
=
x
5
−
x
+
a
P(x) = x^5-x+a
P
(
x
)
=
x
5
−
x
+
a
is irreducible over
Z
\mathbb{Z}
Z
if
5
∤
a
5 \nmid a
5
∤
a
.
Back to Problems
View on AoPS