Question

以双曲线的右焦点为圆心，且与其渐近线相切的圆的方程是             

A．x²+y²-10x+9=0                                          B．x²+y²-10x+16   

C．x²+y²+10x+16=0                                      D．x²+y²+10x+9=0

Answer 1

Ａ