Câu 1: cho pt x^2 -(m-1)×x-m^2+m-2=0 a,cmr pt luôn có 2 nghiệm với mọi m b,m=? E=x1^2 +x2^2 đạt GTNN c,Tìm hệ thức liên hệ giữa 2 nghiệm không phụ thuộc vào m d, Lập 1 pt bậc 2 có 2 nghiệm là y1=x1-1 và y2=x2 -1

1.My father used to take us to the circus when we lived in the city => We............................................................................................ 2. I usually got up late last year , but this year I often get up early => I used ...............................................................................................

Đồ thị hàm số y=ã( a khác 0 ) . giải thích tại sao a khác 0 và nếu a=0 thì sẽ như nào?

các cậu làm hộ tui ik 10h nộp cho tui nha thương mn

Đề bài:phân tích thành nhân tử(pp dùng hàm đẳng thức Giúp em nhanh vs(giải chi tiết)

III. Fill in the blanks with so MUCH or so MANY. 1. We have __________________mathematical problems that we can’t go to bed early. 2. There was_________________ audience that no seats in the hall were left. 3. The new job is taking me_________________time that I am considering to resign. 4. Doctor Simmon has_________________ patients that he’s always busy. 5. I ate__________________ sandwiches that I felt ill. 6. My father has_________________work to do that he can’t come back home tonight. 7. They drank__________________ wine that they couldn’t walk. 8. His mother asks him to take ________________hings that he can’t put all of them into his suitcase. 9. There are _________________places of interest in London that Jane can’t decide where to go first. 10. There was_____________________ noise in the room that I couldn’t work. 11. There are__________________ planets in the universe that we can’t count them. 12. She had___________________ problems that she didn’t know what to do. 13. He has_________________ contact with friends through email that it takes him more than one hour to check mail every dav. 14. Smoking cigarettes causes________________danger that smokers suffer a lot of serious diseases. 15. Since they moved to the new town, their routines have got_________________changes that their lives have been turned upside down.

1.Tính các góc của tam giác ABC biết3A = 4B , A - B = 120 độ

Chứng minh A=$\frac{a}{b+c}$ +$\frac{b}{b+c}$+ $\frac{x}{y}$ khôg phải là số nguyên dương.

Bạn tốt bụng giải giúp mk nhé😅.

Rút gọn..................................