Đáp án:
$\begin{array}{l}
22)Tâm\,I\left( {1;2; - 3} \right);A\left( {1;0;4} \right)\\
R = IA \Rightarrow I{A^2} = 53\\
\Rightarrow {\left( {x - 1} \right)^2} + {\left( {y - 2} \right)^2} + {\left( {z + 3} \right)^2} = {R^2} = 53\\
\Rightarrow C\\
23){R^2} = I{A^2} = 26\\
\Rightarrow {\left( {x - 2} \right)^2} + {\left( {y + 3} \right)^2} + {\left( {z - 4} \right)^2} = 26\\
\Rightarrow B
\end{array}$
