Hệ bất phương trình  có nghiệm là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Đường thẳng nào trong các đường thẳng sau đây là trục đối xứng của parabol $y=-2x^2+5x+3$ ?
  
  
• Hệ Mặt Trời bao gồm :
  
• Lênin viết: “Sự phát triển hình như diễn lại những giai đoạn đã qua nhưng dưới một hình thức khác, ở một trình độ cao hơn” bàn về
  
• Tập nghiệm $x\ge 3$ của phương trình $\frac{\left|x-3\right|}{\sqrt{x-2}}=\frac{x-3}{\sqrt{x-2}}\iff \left|x-3\right|=x-3\iff x-3=x-3.$ là:
  
  
• Để giải quyết các vấn đề mang tính toàn cầu cần sự hợp tác giữa
  

• Sarah _______ fat, but now she is thin.

• Trang Tien Plaza is the biggest ______in Hanoi.

• Fill in each numbered blank with one suitable word or phrase
  Have you ever wondered what it would be like to live away from home while you attend school? Would you like to have the (1)_______ of living and studying with students from different countries around the world. Cranbrook Kingswood School is one of the few schools that can offer you this kind of remarkable opportunity!
  Cranbrook’s green, wooded campus is a beautiful and safe living and learning (2)_______. A fresh water lake and (3)_______ sculptures by the famous artist Carl Milles waken the imagination. The many buildings of Cranbrook were designed by world-renowned architect Aliel Sarineen and are both beautiful and (4)_______. In fact, all the furniture, woodwork, window glass and tapestries at the school were specially designed for the school and made by hand. Each room and building was created to please and (5)_______
  The students of Cranbrook Kingswood are very (6)_______. Their studies are (7)_______ and prepared them for some of the best universities around the world. But it’s not all hard work at Cranbrook! Students (8)_______ in a rich program of athletics, music and art courses. Clubs and other activities keeps the students happy and busy during the year. If you are (9)_______ boarding school, consider Cranbrook. Call now to arrange a visit and we’ll be happy to show you (10)_____ the school.
  Question 4.
  

• Mary, accompanied by her brothers on the piano, _____ very well received at the talent show yesterday.

• Một hợp chất hữu cơ (Y) có tỉ khối hơi so với khí oxi là 1,4375. Đốt cháy hoàn toàn 1,15 gam chất Y thu được 2,2 gam khí CO₂ và 1,35 gam H₂O. Công thức phân tử của (Y) là: