Giúp mk với mk đang cần gấpppppp Cho PT: x2 + 2(m - 1)x + m2 + 4 = 0 a. Tìm m để PT có hai nghiệm phân biệt. b. CMR khi pt có hai nghiệm phân biệt thì hai nghiệm đó là hai nghiệm cùng dấu. c. Tìm m để PT có hai nghiệm cùng âm. d. Khi PT có hai nghiệm phân biệt, tìm một hệ thức giữa các nghiệm của PT mà không phụ thuộc vào tham số m.

giúp minh với ạ! kiến thức lớp 8 nhé C/m các bất đẳng thức sau:

Thuyết minh về loài vật(cây tre, con vật)

TĐN số 6 lớp 8 nhé!!!! -Về cao độ bài sd những nốt nhạc gì? -Về trường độ bài sd những nốt nhạc gì? -Bài có sd kí hiệu âm nhạc gì? Lẹ hộ mình nha,đúng mình vt 5* và chọn CTLĐN cho!!!!!!

Hãy vẽ vào vở các đoạn thẳng CD,EF,GH,IK BIẾT RẰNG CD=3/4 AB EF=5/6 AB GH =1/2 AB IK=5/4 AB

Bài thơ trên có những câu gợi cho em nhớ đến một bài thơ nào đã học trong chương trình THCS. Điểm giống nhau của hai bài thơ áy là gì?

Châu Đại Dương được bao bọc bởi mấy đại dương lớn trên Trái Đất:

Fill in each numbered blank with one suitable word. 10 points Americans like sport very much. One of the (1) popular kinds of sports in Autumn is football. All the high schools(2) universities have their own teams. In winter the most popular kind of sports (3) basketball. There is usually a match every evening in one school gymnasium or another. In some parts of the United States there is a lot of (4) and ice. Many people like skiing and skating. In the other two (5) , millions of Americans enjoy baseball. The schools have their games in (6) , but the most important professional games are played during summer. Many people listen to the games (7) the radio, watch them on television or read about them (8) the newspapers. Some also play tennis or golf and others (9) fishing. They like to stay outdoors (10) it is warm during the months of June, July and August.

Fill in each numbered blank with one suitable word. 10 points Americans like sport very much. One of the (1) popular kinds of sports in Autumn is football. All the high schools(2) universities have their own teams. In winter the most popular kind of sports (3) basketball. There is usually a match every evening in one school gymnasium or another. In some parts of the United States there is a lot of (4) and ice. Many people like skiing and skating. In the other two (5) , millions of Americans enjoy baseball. The schools have their games in (6) , but the most important professional games are played during summer. Many people listen to the games (7) the radio, watch them on television or read about them (8) the newspapers. Some also play tennis or golf and others (9) fishing. They like to stay outdoors (10) it is warm during the months of June, July and August.

Fill in the blank of the following passage with the words given. 10 points expensive after fun temple types shop vacation bought thought like Liz has just come back from her (1) in Nha Trang. It was really wonderful. She had a lot of (2) . For Liz, the people in Nha Trang were friendly and the food was delicious. But she thought that most things there weren’t cheap. They were quite (3) Her parents took her to see Cham (4) and Tri Nguyen Aquarium. In Tri Nguyen Aquarium they saw some sea animals (5) sharks, dolphins and turtles. They also saw a lot of different (6) of fish. Liz liked the colorful fish. She (7) they were the most beautiful. They bought some things from the souvenir (8) near the exit of the aquarium. Liz’s father (9) her a cap with a picture of dolphin, and her mother bought a poster. Liz bought gifts for her friends. (10) the trip Liz didn’t feel tired at all. She had a great time!