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	Các bình luận về: Đề: Trong không gian với hệ tọa độ Oxyz, cho \({d_1}:\left\{ \begin{array}{l} x = 1 + t\\ y = 2 &#8211; t\\ z = &#8211; 2 &#8211; 2t \end{array} \right.;\;{d_2}:\left\{ \begin{array}{l} x = 2 + t&#039;\\ y = 1 &#8211; t&#039;\\ z = 1 \end{array} \right.\). Xác định vị trí tương đối của hai đường thẳng d1 và d2. 	</title>
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