user-avatar
tranvanchau0309
2 năm trước
F={(x,y)/x,y thuộc Z và x2 + 24= y2} Viết tập hợp F bằng cách liệt kê các hạng tử
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

1.You should |examine| your email before sending. A. go up B. go over C. go off D. go on 2.Đóng cửa, dừng kinh doang là gì ? A. Close down B. Pull down C. Turn down D. Pass down 3.The workshop .............. from generation to generation. A. Set up B. Handed C. given back D. passed down 4.This question is diffcult. I can't deal .............. it. A. Off B. On C. In D. With 5.He took off his uniform and ............. a sweater and trousers A. Went over B. Got on C. Turned up D. Put on 6.She continued talking about her trip although everyone found it titring. A. Got over B. Kept over C. Looked after D. Went on 7.Maria is slowly |recovering from| her lllness. A. Keeping on B. Getting over C. Putting off D. Looking down 8.I'm not going to .............. on invitation to go to New York! A. Take up B. Put off C. Turn down D. Give up 9.We've aksed my mother to take care of the kids while we're away. A. Care abuot B. Interest in C. Look after D. Go after 10.Children spent hours warching the planes ............ and land. A. Fly up B. Take off C. Go up D. Run down 11.I tried to ........... her ........... by telling a joke. A. Dress ... up B. Find ... out C. Let ... down D. cheer ... up 12.Please ......... the television ........ before you go to bed. A. Turn ... up B. Take ... off C. Look ... after D. Turn ... off 13........ your shoes ......... before you come in. A. Knock ... down B. Turn ... on C. Call ... off D. Take ... off 14.He's been feeling much better since he gave ....... smoking. A. Into B. Up C. Down D. Off 15.Vinh is very friendly. He ....................... most of my friends. A. Gets on with B. Lives up to C. Looks forward to D. Comes across with 16.Face up to = A. Remove B. Come back C. Deal with D. Turn off 17.Please |turn| the lights |off| as you leave. A. Turn down B. Shut off C. Set down D. press the switch 18.Think over = consider nghĩa là A. Cân nhắc, suy sét B. Ghi chú C. Kiểm tra D. Tiếp tục 19.This workshop was ............ by my grandparents 30 years ago. My uncle and aunt took over last year. A. Set up B. Turn up C. Set off D. Put off 20.Students can .............. any of the activities organized by the club. A. Participate in B. Join C. Take part D. Take in 21.We are all .............. to seeing our grandparents again. A. Getting with B. Looking for C. Looking forward D. Thiking over 22.Remember to |take/make note of| what the tour guide said. A. Break in B. Put down C. Get down D. Give up 23.Hi, Tom! ......... the jet lag? A. Growing up B. Getting over C. Living on D. Taking off 24.A guide .......... us ........ the exhibition. A. Showed ... aruond B. Put ... down C. Looked ... up D. Grew ... up 25........... the word ........... in your dictionary. A. Look ... forward B. Look ... up C. Look ... after D. Look ... for

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team