CM câu tục ngữ gần mực thì đen gần đèn thì rạng Mn vt thộ mik trong xã hội,trong học tập thui nha

x^2+(m-1)x+5m-6=0 tìm m để phương trình có 2 nghiệm x1;x2 thỏa mãn 4X1+3X2=1

Giúp mik vs hứa sẽ cho ctlhn nếu lm nhanh và đúng

Cho hệ phương trình mx +2y=18 x - y = -6 Tìm m để phương trình có nghiệm duy nhất (x;y) thỏa mãn 2x + y =9

Các nhà thực vật đang tập trung nghiên cứu tổ tiên hoang dại của các loại cây trồng . Vì sao hướng nghiên cứu này rất được quan tâm ?

làm hộ mình đề 1 sgk trang 58 tập 2 với

7,5 × x + x × 3,5=39,93 x:4+x=3,75

Tìm giá trị của m sao cho: a) Phương trình (2x+1)( 9x+2m)-5(x+2)=40 có nghiệm x=2 b) Phương trình $x^{3}$ +m$x^{2}$ -4$x^{}$ -4=0 có một nghiệm x=1 Với giá trị m vừa tìm được, tìm các nghiệm của phương trình c) Tìm k để hai phương trình sau tương đương: (2$x^{}$ +1)($x^{2}$ +4x+5)=0 và 5x+3k=$k^{2}$ +10$k^{}$ -$\frac{5}{2}$

viết đoạn văn 200 từ nói về trách nhiệm của tuổi trẻ đối với bạn thân gia đình và nhà trường

9, Maria plays the piano badly. Her friends play the same as her. Not only ………………………………………………………… Both ……………………...……………………………………… 10, We took a train to Liverpool last Sunday. We went ………………………………………………………… Exercise 10 1, Indonesia is one of the strongest countries in badminton. One of …………………………………………………………… 2, He is a good soccer player. He plays ………………………………………………………… 3, Jane found driving on the left difficult. Jane wasn’t used ………………………………………………… 4, He liked oranges more than durians. He preferred …………………………………………………… 5, The exam was easier than we thought. The exam was …………………………………………………… 6, Han is a better swimmer than Lan. Lan is …………………………………………………………… Lan isn’t ………………………………………………………… Lan swims ……………………………………………………… 7, Can she take care of herself while her mother is away? Can she look ……………………………………………………? 8, Where can I find the station? Could you ……………………………………………………… 9, We took a train to Liverpool last Saturday. We went ……………………………………………………… 10, The trip to Chicago was cheaper than we expected. The trip to Chicago wasn’t…………..…………………………. 11, It will not be necessary for you to go to the meeting next week. You won’t ……………………………………………………… 12, Roller-skating doesn’t interest Sonia. Sonia isn’t ……………………………………………………… 13, You ought to ride the bike more carefully next time. You had ………………………………………………………… 14, My parents didn’t let me stay out late when I was young. I wasn’t allowed ………………………………………………… 15, How long was your flight from Hanoi to Jakarta? How long did …………………………………………………… 16, George can cook very well. George is ……………………………………………………… 17, Phillip usually works hard. Phillip is ………………………………………………………… 18, I am not as good at Math as my brother. My brother ……………………………………………………… 19, They won’t be able to come on Saturday. It will be impossible …………………………………………….. 20, Their father got to London by taxi last Monday. Their father …………………………………………………… Exercise 11 1, Listening to music is much more interesting than going to the circus. I prefer ………………………………………………………… 2, We didn’t enjoy the trip because of the heavy rain. The heavy rain prevented……………………………………… 3, You shouldn’t eat too many candies. You had ………………………………………………………… 4, He is a slower and more careful driver than Lan. He drives ……………………………………………………… 5, The visitor spoke too quickly that I couldn’t understand what he said. The visitor spoke too……………………………….………….. 6. You should't eat too much meat . you'd .......................................................................................... 7. How heavy is the chicken? What.........................................................................................? 8. Hoa is a hard students . Hoa studies................................................................................. 9. It takes me about two hours each day to do my homewo . I spend ....................................................................................... 10. He is a slower and more careful driver than I am He drives.................................................................................... Exercise 12 1. It took Mr. Hoang half an hour to walk to work yesterday. Mr. Hoang spent....................................................... 2. What is the price of this cap ? How much.................................................................? 3. You shouldn’t eat too much meat. You’d............................................................................ 4. Lan is the youngest of the three sisters. Lan has ..................................................... 5. Our house is older than any other house in the living centre Our house...................................................................... 6. Mai usually works hard. Mai is usually a……………………………………………….. 7. There are eight hundred stamps in Hoa’s collection. Hoa’s collection...................................................................... 8. How heavy is the chicken ? What ......................................................................................? 9. How much is this book ? What is..............................................................................? 10. Listening to music is more interesting than watching TV. I prefer........................................................................