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两圆相交于点A(1,3)、B(m,-1),两圆的圆心均在直线x-y+c=0上,则m+c=________.
两圆相交于点A(1,3)、B(m,-1),两圆的圆心均在直线x-y+c=0上,则m+c的值为( )A.-1 B.3 C.2 D 0
两圆相交于点A(1,3)、B(m,-1),两圆的圆心均在直线x-y+c=0上,则m+c的值为( )
A.3 B.2 C.0 D.-1
A.-1 B.2 C.3 D.0
A.-1 B.3 C.2 D 0