![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
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a) 15x^2 - x -6
b) ( x^2 + 3x +2)( x^2 + 7x + 12) +1
c) x^9 + x^8 + x^7 - x^3 + 1
@who am i? @Khánh Ngô Nam @An Đăng Gia @Mộc Nhãn HELP ME!!!!![Tonton 18 :Tonton18 :Tonton18](/data/emoji/Tonton/Tonton_18.gif)
b) ( x^2 + 3x +2)( x^2 + 7x + 12) +1
c) x^9 + x^8 + x^7 - x^3 + 1
@who am i? @Khánh Ngô Nam @An Đăng Gia @Mộc Nhãn HELP ME!!!!
![Tonton 18 :Tonton18 :Tonton18](/data/emoji/Tonton/Tonton_18.gif)