设集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0
设集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0}.
设集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0
设集合A={x/x2+4x=0},集合B={x/x2+2(a+1)x+a2-1=0,a属于R}
设集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0},若U=R,A∩(∁UB)=A,
设集合A={x|x2-3x+2=0},B={x|x2+2(a+1)x+(a2-5)=0}.若U=R,A∪(CuB)=A,
设集合A=(X|X2-3X+2=0),B=(X|x2+2(a+1)X+(a2-5)=0.若AUB=A,求实数a的取值范围
设集合A={x|x2-5x+6=0},B={x|x2-(2a+1)x+a2+a=0},若B⊆A,求实数a的值.
设集合A={x|x2+4x=0,x∈R}、B={x|x2+2(a+1)x+a2-1=0},若B是A的子集,求实数a的范围
设集合A={x/x2+4x=0},集合B={x/x2+2(a+1)x+a2-1=0,a属于R} 若A∪B=B,求a的值
设集合A={x│x2-5x+4=0},B={x│x2+2(a-1)x+a2+1=0},且A∩B=B.求实数a的取值范围
设集合A={x∈R|x2+4x=0},B={x∈R|x2+2(a+1)x+a2-1=0},若A∪B=B,求实数a的值.
设集合A={x|x2—5x+6},B=(x|x2—{2a+1}x+a2+a=0},若B含于A,求实数a的取值范围