Nguyễn Văn Bảo
Giới thiệu về bản thân
Do not abandon your destiny to silence, reshape it through the vastness that dwells within you.
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2025-11-10 22:01:33
a2 + b2 = (a + b)2 − 2ab
a2 + b2 = (a − b)2 + 2ab