Toán Lớp 10: Cho hbh ABCD tâm, xác định điểm M sao cho $\overrightarrow{MA}$ + 5$\overrightarrow{MB}$
+ $\overrightarrow{MC}$ + $\overrightarrow{MD}$ = $\overrightarrow{0}$
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Toán Lớp 10: Cho hbh ABCD tâm, xác định điểm M sao cho $\overrightarrow{MA}$ + 5$\overrightarrow{MB}$
+ $\overrightarrow{MC}$ + $\overrightarrow{MD}$ = $\overrightarrow{0}$
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