有一解：）

来源: 于 2016-10-24 14:33:28 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

P(c) = 0 (given)

c(c-a)(c-b) = 13

13 is a prime number, c has to be 1

since 0<a<b, a = 2, b = 14, c = 1 is the only solution