giải và biện luận các bpt sau:
1) $\left| {x^{2}-2x+a} \right|\leqslant \left| {x^{2}-3x-a} \right|$
2) $\sqrt{2x^{2}+3}<x-m$ 
3) $\sqrt{x-m}+2m\leqslant \sqrt{x+2m}$ 

bị xóa vì bị trùng bởi Đức Vỹ 24-10-13 05:01 PM

Câu hỏi này có nội dung hoàn toàn trùng với câu hỏi đã có.

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