Tìm n€ Z sao cho 2n -3: hết cho n+1 Cho đa thức P (x)=ax^3+bc^2+cx. Với P(0) và P(1) là số lẻ Chứng minh rằng P(x) không thể có nghiệm là số nguyên

hay neu y nghia cua 3 kho tho dau va 3 kho tho cuoi cua bai LUOM + DEM NAY BAC KHONG NGU AI TRA LOI DUNG MINH LIKE CHO MNH DANG CAN GAP MAI MINH KT ROI HUHU

viết 1 đoạn văn khoảng 100 từ kể về 1 người bn thân nhất của mik bằng tiếng anh

1. The 1989's earthquake destroyed many buildings in San Francisco. -> ......................................................................................................................................................................... 2. Natural disasters have killed thousands of people this year. -> ......................................................................................................................................................................... 3. In North America, people call a strong tropical storm a hurricane. ->………………….............................................................................................................................................. 4. Scientists can warn us about volcanic eruptions. -> ......................................................................................................................................................................... 5. Millions of people are listening to the weather forecast on TV. -> ......................................................................................................................................................................... 6. We cannot predict tornadoes long in advance. -> ......................................................................................................................................................................... 7. Scientists haven't discovered the cause of some natural disasters. -> .........................................................................................................................................................................

Cho tam giác ABC vuông tại A, có AB<AC. Trên cạnh BC lấy điểm K sao cho BA=BK. Từ K kẻ đường thẳng vuông góc với BC cắt AC tại D. a,Chứng minh tam giác ABD= tam giác KBD.b, Chứng minh BD là đường trung trực của đoạn thẳng AK. c, Qua K kẻ đường song song với BD cắt AC tại M. Chứng minh tam giác DKM cân. d, Kẻ ME vuông góc với BC ( E thuộc BC) chứng minh rằng ME < 1/2AM.R

1. cảm nhận của em về đoạn văn sau chính là đoạn 2 của bài cô tô 2.viết một đoạn văn ngắn tả mặt trời mọc buổi bình minh. giúp em với .

1. They won the match ............ they played excellently. (so / but/ because/ although) 2. I met a man ............ said he knew you. (which/ whom/ who/ whose) 3. ............ Fiona was afraid of flying, she got on the plane. (so / but/ because/ although) 4. I got bored with the book, ............ I stop reading it. (so / but/ because/ although) 5. This region enjoys good weather ........... the year. (on/ for/ while/ throughout) 6. Passover is...by Jewish people in Israel and many parts of the world. (occurred/celebrated/decorated/ nominated 7. Kim didn't do well in Math. ..............., she asked her teacher to help her after class. (However/ Although/ Because/ Therefore) 8. The bridge ............ in the earthquake. (sucked/ collapsed/ struck/ warned) 9. Scientists are trying to ................ when an earthquake hits. (predict/ save/ appear/ move) 10. When Mount Pinatubo .......... in 1991, hundreds of people died, but thousands were saved. (blew/ reached/ destroy/ erupted) 11. A few days before Tet is the time ....... people to clean and decorate their homes. (with/ for/ to / at) 12. It was very kind .......... you to prepare and serve meals for the homeless. (for/ on / at / of) 13. It's six months since the tidal wave ........ Phuket, Thailand. (destroys/ destroyed/ has destroyed/ was destroyed) 14. A large number of fishermen ........ when the storm struck. (killed/ was killed/ were killed/ are killed) 15. Easter is a joyful festival ....... comes in early spring. (which / that it/ who/ whose) 16. "You are great dancer, Doris!" - "Thanks, Rita. ................ " (That’s very nice of you to say so. / Well done./ You are welcome./ I'd love to.) 17. I've made a lot of friends ........ are so warm and friendly. (which / who / whom/ whose) 18. There's nothing good on TV. Why don't you turn it ........? (on/ down/ off/ up) 19. Hurricane Andrew ........ through southern Florida in 1992. (swept/ arrived/ reached/ hit ) 20. Chocolate and sugar eggs are what children receive ....... Easter. (at / on / in / with)

rút gọn $\frac{\frac{12(1+\sqrt{x})^{11}.x^{6}}{2\sqrt{x}}-\frac{2\sqrt{x}(1+\sqrt{x})^{12}.6x^{5}}{2\sqrt{x}}}{x^{12}}$

một trường gửi không quá 100 hs tham gia hội khoẻ, 1/9 hs lớp 6, 1/8 là hs lớp 7, 1/6 hs lớp 9 còn lại là lớp 8. Hỏi số hs lớp 8

nói về chuyến đi công viên bằng tiếng anh