vuchidung110's Content
There have been 2 items by vuchidung110 (Search limited from 05-06-2020)
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$\sum \frac{x^{2}+y^{2...in Bất đẳng thức - Cực trịStarted by tunglamlqddb, 25-07-2016 |
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$(xy)^{2}+(xz)^{2}+(yz)^{2...in Bất đẳng thức - Cực trịStarted by mathslover, 24-07-2016 |
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