tìm nghiệm của đa thức: x^2+4x+3

ai giúp em vs câu hỏi trong hình ạ> chiều nay em đi học rôif !!!

l.Đọc-hiểu ''Tôi không ngờ....bài học đường đời đầu tiên'' 1.Đoạn trích đó đc vt theo PTBĐ chính nào?Nêu nội dung chính của đoạn văn đó 2.Suy nghĩ của em về Bài học đường đời đầu tiên của dế Mèn ll.Làm văn 1.Tìm phép tu từ trong đoạn trích sau và nêu tác dụng của chúng Gậy tre,chông tre chống lại sắt thép của quân thù...tre hi sinh để vảo vệ con người

Giúp mik với ạ. Mai mik nộp ròi..

Viết 1 hàm kiểm tra 1 số nguyên x có phải là số chính phương không? Ứng dụng hàm này hãy in ra màn hình các số chính phương nhỏ hơn 100. Đang cần gấp ạ!

Chứng minh rằng đa G(x) luôn luôn vô nghiệm với mọi giá trị của x x mũ 2+2x+2021

Câu1: Burn (A) trash(B) will pollute (C) the air (D) => chữa lỗi sai và sửa lại Câu 2: Do you remember the department .............. we bought these shirts? A) which B) where C) that D) when Câu 3: What will you wear to the ceremony?.................... A) An album B) A wedding ceremony C) My new suit D) My younger brother Câu 4: It is a calculating machine which speeds up calculations: it can add, subtract, multiply, and divide with lightning speed and PERFECT accuracy A) full B) total C) capable D) exact Câu 5: All of the student, but Tom went to the meeting A) Tom went to the meeting; and do did all of student B) Except for Tom, all of the students went to the meeting C) All of the student, especially Tom went to the meeting D) All of the students, including Tom went to the meeting Câu 6: My father is living with me. My younger sister is living with me too A) Either my teacher or my younger sister is living with me B) Neither my teacher nor my younger sister living with me C) I with my father but my younger sister doesn't D) Not only my fahter but also my younger sister is living with me Câu 7: The large movement of the earth under the water causes a very large and powerful tsunami. That tsunami was called the Asian Tsunami in most of the world. It was called the Boxing Day Tsunami in England, Australia, South Africa and Canada because it happened on the holiday which they call Boxing Day. The tsunami caused a lot of damage to countries such as the Philippines, Thailand, Indonesia and Sri Lanka. Waves as high as 30 meters killed many people and damaged or destroyed a lot of buildings and other property. Over 225,000 people died or they were not found after the tsunami. The waves traveled as far away as South Africa (8,000 kilometers) where as many as 8 people died because of high water caused by the waves. Because of how much damage was caused and the number of people the earthquake affected, over $7 billion was donated to help the survivors and rebuild the areas damaged. 70. Why was the tsunami called the Boxing Day Tsunami in England? A. Because it happened when people were boxing. B. Because it happened when people were collecting boxes C. Because it happened on Boxing Day D. Because it destroyed a lot of boxes 71. How high were the waves? A. thirteen meters B. eighteen meters C. thirty meters D. two hundred meters 72. What were some people in South Africa killed by? A. earthquake B. high water C. high wind D. volcano 73. Which of the following is NOT true? A. Only in Asia the tsunami was called Asian Tsunami B. The tsunami caused a lot of damage to Indonesia C. Many people died because of the high waves D. A lot of money was raised to help people 74. What does the word ‘survivors” in the last sentence mean? A. Houses that aren’t destroyed B. Offices are being rebuilt C. People who were dead D. People who are left alive VOTE 5 SAO + TLHN NHƯNG PHẢI GIẢI THÍCH Ạ

liên hệ thực tế địa phương hoặc trong tài liệu trên mạng internet để tìm hiểu tên và mô tả đặc điểm 1 loại rưngf MÌNH ĐANG CẦN GẤP Ạ HỨA CHO 5 SAO+CTRLHN

nghị luận về Thái độ tích cực tạo nên sức mạnh

a)Cho a>0, b>0. Chứng minh rằng: a+b ≥ 2√ab. Dấu bằng xảy ra khi nào? b) Cho x>0, chứng minh rằng: x + $\frac{1}{x}$ ≥ 2. Dấu bằng xảy ra khi nào? c) Cho x>2, chứng minh rằng: x + $\frac{4}{x-2}$ ≥ 6. Dấu bằng xảy ra khi nào? d) Cho a,b>0, chứng minh (a+b)( $\frac{1}{a}$ + $\frac{1}{b}$) ≥ 4. Dấu bằng xảy ra khi nào