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hungvippro491995
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
4cos^2(x)+3tan^2(x)-4căn3cos(x)+2căn3tan(x)+4=0
ai giai dk thi lam nhanh nhanh nhe rui gui len ta cung dam dao
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ai giai dk thi lam nhanh nhanh nhe rui gui len ta cung dam dao