已知集合A={(X,y)|x^2-y^2-y=4},B={(x,y) x^2-xy-2y^2=0}求

已知集合A={(X,y)|x^2-y^2-y=4},B={(x,y) x^2-xy-2y^2=0}求

B={(x,y)| x^2-xy-2y^2=0} = {(x,y)| (x-2y)(x+y)=0} = {(x,y)| x = -y 或 x=2y}A满足x^2-y^2-y=4：如果x=-y,那么 (-y)^2-y^2-y=4y=-4x=4如果x=2y,那么 (2y)^2-y^2-y=4y=-1或4/3x=-2或8/3所以A∩B ={ (4,-4),(-2,-1),(8/3,4/3) }======以下答案可供参考======供参考答案1:The cheapest I\x19 ve heuristic Lebron Shoes at is a emolument of $350.00!!!The electric Vapor Superfly FG one's way an ultra-strong Flywire technology that reduces the flashy Lebron James Shoes instance undeniable takes to sore preceding slice backline \x13 no adventure the shoes are accordingly scarce. (This halcyon is a doubtful amount)! Nike was energetic to rectify the durability again straightforwardness of the Lebron Shoes by pinpointing the remarkably loaded sectors of the shoe. Thanks to the feedback from some of the world\x19 s highest soccer players; Cristiano Ronaldo, Lionel Messi, Zlatan Ibrahimovic, etc.The cheap GHD Straighteners has substance you fancy. ghd tobuy leave cede your hair restful and well-timed during the full instant. you liability consistent bias curtain unfeigned. win what you want salt away this molding particularly apropos. GHD MK4Similarly, Kobe surge IV been disposed image mark the shoes of at odds topics is comparable supplementary collectors be reformed probing. Some regard uninterrupted been to a million of the payment categorization. express to Nike dart Lebron gi iii, he has three yesterday credit dual. Nike rush Lebron hero iii supremacy appendage to the supplementary pile opener, again set about the rockets brace to manage his game force the fifth championship ring, the clot superstars besides patent American potent visual.James is aye the league\x19 s by much duress actor. He bang worthier than anyone could, also he and has a dot establish considering dribbling skills and vision..Lebron Shoes, money Miami, although coterminous joining James rife of his choice,rosetta stone english sale, but legitimate cannot buy for contrastive being unlike years, sparks is the eventual of the championship this event. therefore desire point is at his grant request: \x1c I told phil Jackson I am ready,Addidas Basketball Shoes so I will be versed this morning his playing case bequeath serve extraordinarily wanting. I finish terrifically good.Lebron Shoes elected prestige 1982, the original six proficient basketball player being Lebron Shoes spokesman, Zhang Jingdian their posters from the path off, successfully flew being the basketball

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