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	Các bình luận về: Đề: Trong không gian với hệ tọa độ Oxyz cho tứ diện ABCD biết \(A\left( {1;1;0} \right),B\left( {1;0;2} \right),C\left( {2;0;1} \right)\), \(D\left( { &#8211; 1;0; &#8211; 3} \right)\) . Viết phương trình mặt cầu ngoại tiếp tứ diện ABCD.	</title>
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