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a(b - c) + bd = 182
(1) b > c
0 < a(b - c) < 182,bd < 182
僅 b = 14,d = 12 或 b = 12,d = 14
但均不合 b > c
(2) b < c
檢驗以下 12 組
(a,b,c,d)
(37,12,14,65)
(65,12,14,37)
(14,12,37,65)
(65,12,37,14)
(14,12,65,37)
(37,12,65,14)
(12,14,37,65)
(65,14,37,12)
(12,14,65,37)
(37,14,65,12)
(12,37,65,14)
(14,37,65,12)
可知 (a,b,c,d) = (12,37,65,14)
[ 本帖最後由 thepiano 於 2018-1-23 15:35 編輯 ]