x^2+y^2-4x+10y+16=0
问题描述：
x^2+y^2-4x+10y+16=0
答
x^2+y^2-4x+10y+16=0(x-2)^2+(y+5)^2-13=0(x-2)^2+(y+5)^2=13=2^2+3^2=(-2)^2+(-3)^2if x-2 =2 or -2 ,y+5=3 or -3x=5 or -1,y=-3 or -7if x-2=3 or -3y+5=2 or -2x=4 0r 0 y=-2 or -8