已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A∪B

已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A∪B
已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A
已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A∪B

已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A已知A＝{x|2x-ax+b＝0} B={bx+(a+2)x+5+b=0} A∩B=求A∪B
a=23/3.b=10/3,再自己算,总得动点脑筋

A∩B=是什么意思