h(x) có :$\left \{ {{Δ'=2²-4.1=0} \atop {a=1>0}} \right.$
⇒ h(x)≥0 ∀ x∈R
`h(x)=x^2-4x+4`
`=(x-2)^2`
`=>h(x)≥0` với mọi `x`
If i were you,i .... part in these cultural activities A, would took B, would get C,would take D,would got , giải thích nx ạ
Mọi người ơi giúp em với 5 sao và tnhn cho ai làm đúng nhất
Làm cho mình câu 7 câu 8 câu 10
Part II. Choose the correct answer A, B, C or D to complete each of the following sentences. Write your answers on the answer sheet. 6. There__________ a bus station in the city centre, but it has been moved to the suburbs. A. used to be B. used to have C. use to have D. were 7. Public __________ in my town is good and cheap. A. travel B. tour C. journey D. transport 8. You must __________ the traffic rules in order to avoid accidents. A. park B. obey C. reverse D. warn 9. Because my school is close to my house, I go to school on __________. A. foot B. bike C.car D. bus 10. My English teacher, Mr. Nam, often drives his car __________ on the way to school. A. careful B. caring C. carefully D. careless 11. I am very interested __________learning English. A. to B. for C. at D. in 12. The ending of the film is __________. All audiences are very sad. A. disappointed B. satisfying C. satisfied D. disappointing 13. __________he is a CEO and earns a lot of money, he is very mean. A. Because B. Although C. Despite D. Because of 14. The facsimile _____________by Alexander Bain in 1843. A. invented B. was invented C. is invented D. has been invented 15. I asked him ___________ but he said nothing. A. what the matter was B. what was the matter C. the matter was what D. what’s the matter was 16. I wish I____________ people with the same interests in the future. A. met B. can meet C. could meet D. will meet 17. Mary: “I’ve got an interview for a job tomorrow.” – Peter: “___________.” A. Thank you B. Same to you C. Good luck D. See you
Giúp mk đang cần gấp mk vote cho 5*
Tìm m để đường thẳng (d): y = x - 4 cắt parabol (P) của hàm số y = x² - 3x + m tại 2 điểm phân biệt
Trắc nghiệm ko à Mn lm dùm e cái ạ E c.ơn nhìu
Part I. Choose the correct answer A, B, C or D whose underlined part is pronounced differently from the others. Write your answers on the answer sheet. 1. A. cleaner B. threat C. ahead D. instead 2. A. wipe B. alive C. micro D. link 3. A. shifts B. thinks C. joins D. cups 4. A. cleaned B. caused C. decided D. studied 5. A. hour B. history C. honor D. honest ( làm đúng , làm bừa = báo cáo )
trình bày nguyên nhân nhà Nguyễn thất bại. Từ sự thất bại đs ta rút ra đc bài học j
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến