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Mathematics, 23.09.2021 14:00 littylai5524

Cho hình bình hành ABCD tâmO. Gọi G là trọng tâm tam giác ABC Biểu diễn vecto BC theo vecto GA và GC, vecto AG theo vecto AD và AB

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Cho hình bình hành ABCD tâmO. Gọi G là trọng tâm tam giác ABC Biểu diễn vecto BC theo vecto GA và...
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