Mathematics, 13.09.2019 17:10 queenkendra16
4. find the center and the radius of the circle which circumscribes the triangle with vertices ai, a, a3. express the result in symmetric form.
Answers: 3
![\left[\begin{array}{ccc}a_{1}&b_{1}&c_{1}\\a_{2}&b_{2}&c_{2}\\a_{3}&b_{3}&c_{3}\end{array}\right]=\left[\begin{array}{ccc}-a_{1}^{2}-b_{1}^{2}\\-a_{2}^{2}-b_{2}^{2}\\-a_{3}^{2}-b_{3}^{2}\end{array}\right]](/tpl/images/0229/9597/17af6.png)
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