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Hello,
I can't get this small contest problem. How do you solve this kind of problem?
Let p and q be prime numbers such that (p^2+q^2)/(p+q) is an integer.
Prove p=q.
I can't get this small contest problem. How do you solve this kind of problem?
Let p and q be prime numbers such that (p^2+q^2)/(p+q) is an integer.
Prove p=q.