网址:http://m.1010jiajiao.com/timu_id_2987278[举报]
A.x2+y2-10x+9=0 B.x2+y2-10x+16=0
C.x2+y2+10x+16=0 D.x2+y2+10x+9=0
A.x2+y2-10x+9=0 B.x2+y2-10x-9=0
C.x2+y2+10x+9=0 D.x2+y2+10x-9=0