Tặng các em THCS một bài
Tìm tất cả các cặp số nguyên $(a, b)$ thoả mãn $3^a + 7^b$ là một số chính phương.
$3^a + 7^b$
Started By Tham Lang, 10-02-2012 - 20:06
#1
Posted 10-02-2012 - 20:06
Tham Lang
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Thượng úy
Off vĩnh viễn ! Không ngày trở lại.......
#2
Posted 10-02-2012 - 20:17
Zaraki
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PQT
Đã có tại http://diendantoanho...showtopic=63884 rồi anh ạ.
- nguyenta98 and Dung Dang Do like this
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