Rewrite the sentences, using the given words.

1. Yesterday the temperature was nine degrees. Today it's only six degrees.

=> It's........... colder today than it was yesterday................

2. The journey takes four hours by car and five hours by train.

=> It take............ longer by train than by car.............

3. We were very busy at work today. We are not as busy as that every day.

=> We.............have never brrrn busier at work than today before........

4. Tom is the best football player in this team.

=> Nobody in this team.......... is better than Tom.....................

200 con vịt ngu như chó mà cũng đăng lên

8,16,125

660.877

\(3^4.2^2+2^3.\left(x-25\right)=604\)

\(\Rightarrow81.4+8.\left(x-25\right)=604\)

\(\Rightarrow8.\left(x-25\right)=604-81.4\)

\(\Rightarrow8\left(x-25\right)=604-324\)

\(\Rightarrow8\left(x-25\right)=280\)

\(\Rightarrow x-25=280:8\)

\(\Rightarrow x-25=35\)

\(\Rightarrow x=35+25\)

\(\Rightarrow x=60\)

3²

6²

10²

ai tích mình tích lại ngày cứ gửi tin nhắn cho minh sẽ có 1 tích 

x+1/5=1/3-1/4

x + 1/5 = 1/12

x = 1/12 - 1/5

x = -7/60

      \(\frac{1}{1\times2}+\frac{1}{2\times3}+\frac{1}{3\times4}+...+\frac{1}{49\times50}\)

\(=\frac{1}{1}-\frac{1}{2}+\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{49}-\frac{1}{50}\)

\(=1-\frac{1}{50}\)

\(=\frac{49}{50}.\)

Tổng 1 mũ 3+1 mũ 2 là số chính phương

Tổng 1 mũ 3+2 mũ 3+3 mũ 3 là số chính phương

Tổng 1 mũ 3+2 mũ 3 +3 mũ 3+4 mũ là số chính phương

11100 là đáp án chính xác!

nha!