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	Các bình luận về: Đề: Cho điểm A(1;1;1) và đường thẳng \(d\,:\,\left\{ \begin{array}{l} x = 6 &#8211; 4t\\ y = &#8211; 2 &#8211; t\\ z = &#8211; 1 + 2t \end{array} \right.\).Tìm tọa độ hình chiếu H của A trên d.	</title>
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