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(x+1)2+y2=2 (x-1)2+y2=2 (x+1)2+y2=4 (x-1)2+y2=4
(x+1)2+y2=2 (x+1)2+y2=8 (x-1)2+y2=2 (x-1)2+y2=8
B.,则直线AB的方程为( ) A.2x+y-3=0 2x-y-3=0 4x-y-3=0 4x+y-3=0
, ,则直线AB的方程为( ). A.2x+y-3=0B.2x-y-3=0 4x-y-3=0 4x+y-3=0
(x-1)2+y2=1 (x-1)2+y2=4 (x-1)2+y2=2 (x-1)2+y2=.
(x+1)2+(y-1)2=2 (x-1)2+(y+1)2=2 (x-1)2+(y-1)2=2 (x+1)2+(y+1)2=2
(x+1)2+(y-1)2=2 (x+1)2+(y+1)2=2 (x-1)2+(y-1)2=2 (x-1)2+(y+1)2=2
B.,则直线AB的方程为( ) A.2x+y-3=0 2x-y-3=0 4x-y-3=0 4x+y-3=0
y2-4x+4y+8=0 y2+2x-2y+2=0 y2+4x-4y+8=0 y2-2x-y-1=0
(x+1)2+(y-1)2=2 (x-1)2+(y+1)2=2 (x-1)2+(y-1)2=2 (x+1)2+(y+1)2=2