1.(x-3)方-9+(y+2)方-4+12=0即(x-3)方+(y+2)方=1,是以圆心在(3,-2),半径为1的圆
2.(x-7)方-49+(y-1)方-1+14=0即(x-7)方+(y-1)方=36,是以圆心在(7,1),半径为6的圆
圆心距：(-3-(-7))方+(2-(-1))方=r方 r=5
半径差为圆心距,即两圆内切.