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	2	thêm 1 ký tự trong đề bài		Sửa 19-01-14 03:16 PM ♥♥♥ Panda Sơkiu Panda Mập ♥♥♥ 1
bất phương trình $\left\| {x} \right\| \leq 2\left\| {x-4} \right\| +x-2$ Bất phương trình bất phương trình \left\| {x} \right\| \leq 2*\left\| {x-4} \right\| +x-2 Bất phương trình bất phương trình $\left\| {x} \right\| \leq 2\left\| {x-4} \right\| +x-2$ Bất phương trình

	1	tạo mới
bất phương trình \left\| {x} \right\| \leq 2*\left\| {x-4} \right\| +x-2

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