S
satthutamhon
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
rút gọn các biểu thức sau:
A=x(3a+3b+3c+3d-2a-2b-2c-2d)( x^2 +x^3+x^4): 456
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=((=(( hậu duệ của satthucaonguyeen mong dược cảm ơn
A=x(3a+3b+3c+3d-2a-2b-2c-2d)( x^2 +x^3+x^4): 456
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