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Vài bài mới chế

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#1
NAPOLE

NAPOLE

    Napoleon Bonaparte

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Chứng minh rằng ;
1/$p^2 \geq 3r^2+12rR$
2$p^2+5r^2 \geq 16R.r$
3/$8R^2 \geq p^2+r^2+2R.r$
Defense Of The Ancients




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