P
peen
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
tim mat cau:
mat cau wa diem A(1,2,-4) va diem B(0,3,0), dong thoi tiep xuc voi mat phang: y=5 va x=3
mat cau wa diem A(1,2,-4) va diem B(0,3,0), dong thoi tiep xuc voi mat phang: y=5 va x=3