“微信扫一扫”进入"可可试卷"微信小程序刷题
已知点
A.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 5\)
B.\({\left( {x + 1} \right)^2} + {\left( {y + 1} \right)^2} = 5\)
C.\({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} = 20\)
D.\({\left( {x + 1} \right)^2} + {\left( {y + 1} \right)^2} = 20\)
参考答案:B