Mn giúp mik câu 2, 3 phần 2 và phần 3 nhé mik cho 30 điểm

Một lốc sữa Milo có 4 hộp sữa, một thùng sữa có 12 lốc sữa. Mẹ đưa tiền cho Minh đi siêu thị đủ để mua 1 thùng sữa. Nhưng khi đến nơi thì siêu thị có chương trình giảm giá 25% trên mỗi hộp sữa vào “giờ vàng” . Hỏi với số tiền mang theo thì Minh có thể mua nhiều hơn bao nhiêu hộp sữa so với dự tính ban đầu?

Q=(2√x-1)/(√x+1) + (5√x-1)/(x-1). Rút gọn Q

Giải phương trình : ∛(x-5) + ∛(2x-1) - ∛(3x+2) = -2

In order to stay healthy it is important to have a balanced diet. We should eat three main groups of food. These groups are protein, carbohydrate, and fat. Proteins are very important for building our body. They help us to build new cells as old ones die. Meat and milk products are major sources of protein. We can also get protein from fish, eggs and beans. Carbohydrate and fat are important as they enable us to store energy. Carbohydrates are found in sugar and in cereals. Fat can be found in vegetable oil, in butter and in nuts. Our body also needs minerals, such as iron and calcium, and vitamins. Fish, vegetables and milk contain most of the minerals we need. Vitamins are found in fresh vegetables and fruit. 46. According to the passage, a balanced diet __________. a. is needed for good health b. contains lot of fruit and vegetables c. is rich in minerals and vitamins d. is high in protein 47. Proteins __________. a. can only be found in meat b. help our body build new cells c. produce meat and milk d. can be gotten from rice 48. We can get fat from __________. a. cereals b. sugar c. butter d. vegetables 49. Carbohydrates __________. a. allow the body to store energy b. are not found in rice and cornmeal c. supply a lot of protein d. are the most important of three groups of food. 50. Which of the following is NOT TRUE? a. It’s important to eat a balanced died. b. Fish contain only minerals. c. Iron and calcium are also essential for good health. d. Vitamins are necessary for our body.

Moi nguoi lam giúp mik voi sang mik di học roi

cho hàm số y = 1+x/x-1 để hàm số đồng biến

Rút gọn: b)(a+b)(a^2-ab+b^2) c)(a-b)[(a+b)^2-ab] d)(a+1)^2(a-1)+(a^3-1) e)(a-1)(-a^2)+(a^3-1) f)[(a^2-1)(a+1)]+(a-1)(-ab) giúp em với

Các bạn làm giúp mình hết câu 1.4 nhé mình đang cần gấp

an – bn = (a – b) (a n-1 + a n-2 b + a n-3 b2 + a n-4 b3 +……… + b n-1) cho em hỏi là cái dấu 3 chấm đó là điền gì vô ạ