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saoaicunggiongminh
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Tính lim
x-->1
[TEX]\frac{{\sqrt[3]{27x^3+1}}-{\sqrt[4]{81x^4+1}}}{sqrt{x}-1}[/TEX]
x-->1
[TEX]\frac{{\sqrt[3]{27x^3+1}}-{\sqrt[4]{81x^4+1}}}{sqrt{x}-1}[/TEX]
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