N
nguyentranconglion
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Cho 3 số a,b,c sao cho [tex]\frac{a}{b}=\frac{b}{2c}=\frac{c}{4a}[/tex].Chứng minh b=c
Mod edit. chú ý latex,
Mod edit. chú ý latex,
Học gõ latex ở đây:
http://diendan.hocmai.vn/showthread.php?t=4917
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