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11 tháng 8 2022

Thực dân pháp xâm lược Việt Nam vào năm bao nhiêu?

A. 1858

B. 1847

C. 1843

11 tháng 8 2022

1858nhea

11 tháng 8 2022

4-x^2

11 tháng 8 2022

Kẻ BE là phân giác ABC

Δ BEC đều => BE = EC = BC = 4cm

Do AB // DE ; AD / /BE nên \(AB=DE=DC-EC=7-4=3\left(cm\right)\)

MN là đường trung bình của hình thang ABCD

\(\Rightarrow MN=\dfrac{AB+CD}{2}=\dfrac{3+7}{2}=5\left(cm\right)\)

5 tháng 10 2023

AUHEAIFDLAENFJSFE

ADSDWAD

11 tháng 8 2022

\(\left(x+5\right)^3+\left(x-5\right)^3=0\\ \Rightarrow\left(x+5\right)^3=-\left(x-5\right)^3\\ \Rightarrow\left(x+5\right)^3=\left(5-x\right)^3\\ \Rightarrow x+5=5-x\\ \Rightarrow2x=0\\ \Rightarrow x=0\)

11 tháng 8 2022

(x+5)3 + (x-5)3 = 0

(x+5 +x-5){(x+5)2 -(x+5)(x-5) + (x-5)2 } = 0

x + 5 + x - 5 = 0

X = 0 

hoặc (x+5)2 - (x-5)(x+5)+ (x-5)2 = 0

x2 + 10x + 25 - x2 + 25 + x2 - 10x + 25 = 0

x2 + 75 = 0 ( vô nghiệm) vì x2 + 75 ≥75

vậy x = 0 

X. Choose the word which best fits each gap. Although the city seems to have a lot of great things, the country can offer as (1)_________ satisfaction as well. The country is a marvelous place to live in. It offers a very relaxing feeling, and it is filled (2)_________ magnificent views and scenery. Rural towns offer more open space than cities and aren’t overcrowded. The country can also maybe help you become a more independent and (3)_________ person. You can buy a small piece of land,...
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X. Choose the word which best fits each gap.

Although the city seems to have a lot of great things, the country can offer as (1)_________ satisfaction as well. The country is a marvelous place to live in. It offers a very relaxing feeling, and it is filled (2)_________ magnificent views and scenery. Rural towns offer more open space than cities and aren’t overcrowded. The country can also maybe help you become a more independent and (3)_________ person. You can buy a small piece of land, plough it and put some (4)_________ in order to grow your own vegetables. This way you (5)_________ your own crops, and eat and live in a very healthy way. (6)_________, being in the countryside makes you more of an outdoor person often enjoying the voices and wild places of nature. Not everyone is (7)_________ to the city life and not everyone has the desire to live permanently in the countryside. It is a matter of perspective and personal point of (8)_________.
1. a. most b. more c. much d. many
2. a. in b. out c. up d. with
3. a. active b. idle c. passive d. quiet
4. a. weeds b. seeds c. breeds d. branches
5. a. collect b. damage c. complete d. rotate
6. a. By contrast b. However c. Therefore d. In addition
7. a. Interested b. bored c. suited d. excited
8. a. care b. view C. contact d. way

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11 tháng 8 2022

1 C

2 D

3 A

4 B

5 A

6 D

7 C

8 B