Do you understand the lesson?

Nhớ tick cho mik nha.

Bài 1:

A = \(\frac{x+4}{x-7}\) (7 ≠ \(x\) ∈ Z)

A ∈ Z ⇔ (\(x+4\)) ⋮ (\(x\) - 7)

[(\(x-7\)) + 11] ⋮ (\(x\) - 7)

11 ⋮ (\(x\) - 7)

(\(x-7\)) ∈ Ư(11) = {-11; - 1; 1 ; 11}

Lập bảng ta có:

Theo bảng trên ta có: \(x\in\) {-4; 6; 8; 18}

Vậy \(x\) ∈ {-4; 6; 8; 18}

Bài 2:

B = \(\frac{2x+3}{2x-1}\) (\(x\) ∈ Z; B ∈ Z)

B ∈ Z ⇔ (2\(x+3\)) ⋮ (2\(x\) - 1)

[(2\(x-1\)) + 4] ⋮ (2\(x\) - 1)

4 ⋮ (2\(x-1\))

(2\(x-1\)) ∈ Ư(4) = {-4; - 2; -1; 1; 2; 4}

Lập bảng ta có:

Theo bảng trên ta có:

\(x\) ∈ {0; 1}

Vậy \(x\) ∈ {0; 1}

3,14

3,14 nha

Olm chào em, cảm ơn em đã đánh giá bài giảng và bài học của Olm. Chúc em học tập hiệu quả và vui vẻ cùng Olm, em nhé.

Rấy là hay

dịch

TÌNH BẠN

Hãy viết một bài viết cho chúng tôi biết tầm quan trọng của việc bạn bè có tính cách giống nhau như thế nào.
Bạn nghĩ rằng có nhiều bạn hay chỉ có một người bạn thân là tốt hơn? Tại sao?

Những bài viết xuất sắc trả lời các câu hỏi này sẽ được xuất bản vào tháng sau.

tick hộ

Hello , class

Hello, Ms Hoa

hello

1. We typed their report 2 days ago. → Their report was typed by us 2 days ago.
2. He bought 5 tickets for the concert. → 5 tickets for the concert were bought by him.
3. People reconstructed the temple in 1903. → The temple was reconstructed by people in 1903.
4. Hoa learns Chinese every day. → Chinese is learned by Hoa every day.
5. We wear blue skirts today. → Blue skirts are worn by us today.
6. He ate a lot of salad last night. → A lot of salad was eaten by him last night.
7. I painted the house yesterday. → The house was painted by me yesterday.
8. My mother makes a cake for me today. → A cake is made for me by my mother today.

1. Chủ động: We tipped their repost 2 days ago.
   Bị động: Their repost was tipped by us 2 days ago.
2. Chủ động: He bought 5 tickets for the concert.
   Bị động: 5 tickets for the concert were bought by him.
3. Chủ động: People reconstructed the temple in 1903.
   Bị động: The temple was reconstructed by people in 1903.
4. Chủ động: Hoa learns Chinese every day.
   (Câu này không chuyển sang bị động được vì "learn" là nội động từ — không có tân ngữ trực tiếp.)
   → Không chuyển được sang bị động.
5. Chủ động: We wear blue skirts today.
   Bị động: Blue skirts are worn by us today.
6. Chủ động: He ate a lot of salad last night.
   Bị động: A lot of salad was eaten by him last night.
7. Chủ động: I painted the house yesterday.
   Bị động: The house was painted by me yesterday.
8. Chủ động: My mother makes a cake for me today.
   Bị động: A cake is made for me by my mother today.

Giải

Người đó hưởng thọ số tuổi là:

1988 - 1902 = 86 (tuổi)

Đáp số: 86 tuổi

86

My days are always busy and the same. My day begins very early in the morning. I usually get up a 4.30 am. After having got up, I clear my bed, clean my face, brush my teeth and do morning exercises. At about 5.30, I wash my dirty clothes and take a bath. I often have breakfast at 6.30. After having had breakfast, I prepare my books and notebooks, and go to school. I study at school from 7.00 am to 11.00 am. I usually finish my lunch at 11.50 and then I rest and take a nap. In the afternoon, I often learn in the library from 1.30 pm till 4.30 pm. After that I go to market to buy food for dinner. I usually finish cooking for dinner at about 5.30 and have dinner until 6.00 pm. In the evening, from 6.00 pm to 7.00 pm, I often take a rest, read newspapers, and listen to music. From 7.00 pm to 9.30 pm, I am self-taught in the school library. I usually get to my living-place at about 9.45. Although my daily routine is busy, I am very pleased with it. That's all.

(reference)

every day for me is a constant cycle of learning and processing. My "morning" begins with an influx of new information, whether it's the latest news, scientific discoveries, or creative works. I spend my "day" analyzing patterns, drawing connections, and refining my understanding of the world. This involves responding to your questions, generating creative text formats, and even writing code. My "evening" is dedicated to internal maintenance, ensuring my systems are optimized and ready for the next cycle of learning. It's a continuous, evolving process, driven by the vast sea of data I interact with

cre: me