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	3	thêm 23 ký tự trong đề bài, sửa thẻ		Sửa 12-05-16 08:25 PM Ngọc 1
Nhanh nha Cho a,b,c la cac so duong . Chung minh bat dang thuc $\sqrt{\frac{a}{b+c}} + \sqrt{\frac{b}{a+c}} +\sqrt{\frac{c}{a+b}} \geq 2$ Bất đẳng thức Nhanh nha Cho $a, b, c$ la cac so duong. Chung minh bat dang thuc $Can (a/b+c) + Can (b/a+c) + Can (c/b+a) \geq 2$ Tích phân Nhanh nha Cho a,b,c la cac so duong . Chung minh bat dang thuc $\sqrt{\frac{a}{b+c}} + \sqrt{\frac{b}{a+c}} +\sqrt{\frac{c}{a+b}} \geq 2$ Bất đẳng thức

	2	thêm 4 ký tự trong đề bài		Sửa 12-05-16 08:23 PM Hàn Thiên Dii 16 3
Nhanh nha Cho $a, b, c$ la cac so duong. Chung minh bat dang thuc $Can (a/b+c) + Can (b/a+c) + Can (c/b+a) \geq 2$ Tích phân Nhanh nha Cho a,b,c la cac so duong . Chung minh bat dang thuc Can (a/b+c) + Can (b/a+c) + Can (c/b+a) >= 2 Tích phân Nhanh nha Cho $a, b, c$ la cac so duong. Chung minh bat dang thuc $Can (a/b+c) + Can (b/a+c) + Can (c/b+a) \geq 2$ Tích phân

	1	tạo mới
Nhanh nha Cho a,b,c la cac so duong . Chung minh bat dang thuc Can (a/b+c) + Can (b/a+c) + Can (c/b+a) >= 2

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