Art of Problem Solving

2007 JBMO Problems/Problem 4

Problem 4

Prove that if $p$ is a prime number, then $7p+3^{p}-4$ is not a perfect square.

Solution

See also

2007 JBMO (ProblemsResources)
Preceded by
Problem 3
Followed by
Last Problem
1 2 3 4
All JBMO Problems and Solutions