Giúp mk vs. Các bn nhớ gthich giúp mk nha. Cảm ơn!!!

Cho a+b+c=0. Chứng minh (a^2 +b^2 +c^2)^2 - 2(a^4 + b^4 +c^4) không làm tắt. 1 bước cũng không được. làm tắt, thiếu chi tiết =bc, kể cả các hàng đẳng thức cũng phải chi tiết

Bài 7 Tìm x e Z biết -5/6.120/25 <x < -7/15 . 9/14 Làm hộ nhé

vt calli: 민트 màu xanh lá nhe, có tâm vào :P @Mint

Viết cali: “Hoàng Quân” giúp mình với ạ. Thank you baby :> Y/c: Đẹp, màu Nam tính xíu nhé :))

làm ơn nhanh nhaaaaaaaa///////////////////////////

bài 11 : cho B =(x+2) ²/x . (1 - x ²/x+2) - x ²+6x+4/x a, rút gọn b, tìm giá trị của x để B có giá trị lớn nhất tìm gtln đó bài 12 cho C = x (1-x ²) ²/1-x ² : (1 - x ³ +x/ 1-x) . ( 1+x ³ / 1+x) a, rút gọn b tìm giá trị x để 2.C=1 GIÚP EM VỚI Ạ EM CÒN 10P NX THÔI LÀ PHẢI ĐI HỌC R. CẢM ƠN Ạ

help me giúp mình làm bài này với, nhanh mình sẽ vote 5 sao plsssssss

I. Finish each of the following sentences in such a way that it means the same as the sentence printed before it. Write your answers on your answer sheet. 1. “Why don’t you come along ? A. Let’ s coming along B. What about to come along ? C. He suggested to come along . D. He suggested coming along ? 2. Children enjoy collecting bottles and cans A. Children dislike collecting bottles and cans B. Children are interested in collecting bottles and cans C. Children don’t like collecting bottles and cans D. Children are keen about collecting bottles and cans 3. English is easy to learn. A. It was easy to learn English. B. It were easy to learn English. C. It is easy to learn English. D. It is easy to learning English 4. Don’t leave the lights on all night, you will waste electricity. A. If you do not leave the lights on all night, you will waste electricity B. If you left the lights on all night, you will waste electricity C. If you leave the lights on all night, you would waste electricity D. If you leave the lights on all night, you will waste electricity 5. Although he took a taxi, he arrived late for the concert. A. Despite taking a taxi, he arrived late for the concert. B. Taking a taxi, he arrived late for the concert. C. Though taking a taxi, he arrived late for the concert. D. In spite taking a taxi, he arrived late for the concert 6. Mr. Quyen began teaching Chinese ten years ago. A. Mr. Quyen taught Chinese for ten years. B. Mr. Quyen taught Chinese ten years ago. C. Mr. Quyen has taught Chinese for ten years. D. Mr. Quyen has taught Chinese for ten years ago. 7.We will build a new school in this city. A. A new school will be building in this city. B. A new school will be builded in this city. C. A new school will be built in this city. D. A new school will be to build in this city. 8.My father stopped smoking two years ago. A. My father hasn’t smoked for two years. B. My father hasn’t stoppedsmoking for two years. C. My father hasn’t smoked two years ago. D. My father has smoked for two years.

Một gen có chiều dài 4080A0, A/G=2/3. Số nuclêôtit từng loại mà môi trường cung cấp cho gen nhân đôi 4 lần là: