设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+..设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+b2y+c2)=0的解集是?

设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+..设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+b2y+c2)=0的解集是?
设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+..
设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+b2y+c2)=0的解集是?
上面的1,2是小1,2

设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+..设集合A={（x,y)Ιa1x+b1y+c1=0},B={(x,y)Ιa2x+b2y+c2=0},则方程组A.B的解集是?方程（a1x+b1y+c1)(a2x+b2y+c2)=0的解集是?
方程组其实就是两直线的交点
所以解=A∩B
（a1x+b1y+c1)(a2x+b2y+c2)=0
则Ιa1x+b1y+c1=0或a2x+b2y+c2=0有一个成立就行
所以是A∪B