:x^2+y^2+2x+3y+1=0
即(x+1)^2+(y+3/2)^2=9/4
C2:x^2+y^2+4x+3y+2=0
即(x+2)^2+(y+3/2)^2=17/4
圆心之间的距离为√(1^2+0)=1(4-3)/2=1/2
即两圆相交